diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index a0777bf..4e9226b 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -65,3 +65,59 @@ jobs:
 
       - name: 'Test: install'
         run: pnpm install
+
+  test_run_install:
+    name: 'Test with run_install (${{ matrix.run_install.name }}, ${{ matrix.os }})'
+
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        pnpm:
+          - 4.11.1
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
+        run_install:
+          - name: 'null'
+            value: 'null'
+          - name: 'empty object'
+            value: '{}'
+          - name: 'recursive'
+            value: |
+              recursive: true
+          - name: 'global'
+            value: |
+              args:
+                - --global
+                - --global-dir=./pnpm-global
+                - npm
+                - yarn
+                - pnpm
+          - name: 'array'
+            value: |
+              - {}
+              - recursive: true
+              - args:
+                - --global
+                - --global-dir=./pnpm-global
+                - npm
+                - yarn
+                - pnpm
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Run the action
+        uses: ./
+        with:
+          version: 4.11.1
+          run_install: ${{ matrix.run_install.value }}
+
+      - name: 'Test: which'
+        run: which pnpm; which pnpx
+
+      - name: 'Test: install'
+        run: pnpm install
diff --git a/README.md b/README.md
index 5643aad..52d2a08 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,29 @@ Install PNPM package manager.
 
 ### `registry`
 
-**Optional** Registry to download PNPM from.
+**Optional** (_default:_ `https://registry.npmjs.com`) Registry to download PNPM from.
+
+### `run_install`
+
+**Optional** (_default:_ `null`) If specified, run `pnpm install`.
+
+If `run_install` is either `null` or `false`, pnpm will not install any npm package.
+
+If `run_install` is `true`, pnpm will install dependencies recursively.
+
+If `run_install` is a YAML string representation of either an object or an array, pnpm will execute every install commands.
+
+#### `run_install.recursive`
+
+**Optional** (_type:_ `boolean`, _default:_ `false`) Whether to use `pnpm recursive install`.
+
+#### `run_install.cwd`
+
+**Optional** (_type:_ `string`) Working directory when run `pnpm [recursive] install`.
+
+#### `run_install.args`
+
+**Optional** (_type:_ `string[]`) Additional arguments after `pnpm [recursive] install`, e.g. `[--frozen-lockfile, --strict-peer-dependencies]`.
 
 ## Outputs
 
@@ -32,6 +54,24 @@ Expanded path of inputs#bin_dest.
 
 ## Usage example
 
+### Just install PNPM
+
+```yaml
+on:
+  - push
+  - pull_request
+
+jobs:
+  runs-on: ubuntu-latest
+
+  steps:
+    - uses: pnpm/action-setup@v1.1.0
+      with:
+        version: 4.11.1
+```
+
+### Install PNPM and a few NPM packages
+
 ```yaml
 on:
   - push
@@ -46,9 +86,10 @@ jobs:
     - uses: pnpm/action-setup@v1.1.0
       with:
         version: 4.11.1
-
-    - name: Install dependencies
-      run: pnpm install
+        run_install: |
+          - recursive: true
+            args: [--frozen-lockfile, --strict-peer-dependencies]
+          - args: [--global, gulp, prettier, typescript]
 ```
 
 ## Notes
diff --git a/action.yml b/action.yml
index 4da87a9..b204427 100644
--- a/action.yml
+++ b/action.yml
@@ -19,6 +19,11 @@ inputs:
     description: Registry to download PNPM from
     required: false
     default: https://registry.npmjs.com
+  run_install:
+    description: If specified, run `pnpm install`
+    required: false
+    default: 'null'
 runs:
   using: node12
   main: dist/index.js
+  post: dist/index.js
diff --git a/dist/index.js b/dist/index.js
index c1a9000..d3c58f0 100644
Binary files a/dist/index.js and b/dist/index.js differ
diff --git a/package.json b/package.json
index a433b49..8decc8c 100644
--- a/package.json
+++ b/package.json
@@ -1,20 +1,25 @@
 {
   "private": true,
   "scripts": {
+    "build:schemas": "ts-schema-autogen generate",
     "build:ncc": "ncc build --minify --no-source-map-register --no-cache dist/tsc/index.js --out dist/",
-    "build": "tsc && pnpm run build:ncc",
+    "build": "pnpm run build:schemas && tsc && pnpm run build:ncc",
     "start": "pnpm run build && sh ./run.sh"
   },
   "dependencies": {
     "node-fetch": "^2.6.0",
     "expand-tilde": "^2.0.2",
+    "js-yaml": "^3.13.1",
+    "ajv": "^6.12.0",
     "@actions/core": "^1.2.4",
     "@types/expand-tilde": "^2.0.0",
     "@types/node-fetch": "^2.5.7",
+    "@types/js-yaml": "^3.12.3",
     "@types/node": "^13.13.5"
   },
   "devDependencies": {
     "typescript": "^3.8.3",
+    "@ts-schema-autogen/cli": "^0.1.2",
     "@zeit/ncc": "^0.22.1"
   }
 }
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 94d47d9..2a988b1 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -1,11 +1,15 @@
 dependencies:
   '@actions/core': 1.2.4
   '@types/expand-tilde': 2.0.0
+  '@types/js-yaml': 3.12.3
   '@types/node': 13.13.5
   '@types/node-fetch': 2.5.7
+  ajv: 6.12.0
   expand-tilde: 2.0.2
+  js-yaml: 3.13.1
   node-fetch: 2.6.0
 devDependencies:
+  '@ts-schema-autogen/cli': 0.1.2
   '@zeit/ncc': 0.22.1
   typescript: 3.8.3
 lockfileVersion: 5.1
@@ -14,10 +18,170 @@ packages:
     dev: false
     resolution:
       integrity: sha512-YJCEq8BE3CdN8+7HPZ/4DxJjk/OkZV2FFIf+DlZTC/4iBlzYCD5yjRR6eiOS5llO11zbRltIRuKAjMKaWTE6cg==
+  /@ts-schema-autogen/cli/0.1.2:
+    dependencies:
+      '@ts-schema-autogen/main': 0.1.1
+      '@types/fs-extra': 8.1.0
+      '@types/node': 13.13.5
+      '@types/yargs': 15.0.4
+      fs-extra: 8.1.0
+      tslib: 1.11.2
+      typescript-json-schema: 0.42.0
+      yargs: 15.3.1
+    dev: true
+    hasBin: true
+    resolution:
+      integrity: sha512-61aIkJh7RDDNLCQJtp++1pL/LWlPAI9dxgWyhXycyRm4TRaTVaRBOoxTVnN0IVT+akdhWeiXkhNkCzG6Vd5zAw==
+  /@ts-schema-autogen/lib/0.1.1:
+    dependencies:
+      '@ts-schema-autogen/status': 0.1.1
+      '@ts-schema-autogen/types': 0.1.1
+      '@ts-schema-autogen/utils': 0.0.1
+      '@ts-schema-autogen/validate': 0.1.1
+      '@tsfun/object': 0.0.17
+      '@tsfun/result': 0.0.16
+      '@types/js-yaml': 3.12.3
+      '@types/node': 13.13.5
+      better-path-join: 0.0.1
+      fast-traverse: 0.1.6
+      js-yaml: 3.13.1
+      tslib: 1.11.2
+    dev: true
+    resolution:
+      integrity: sha512-1oOQ9lbGnA3RVfIMiX1thvC0OEvTpvuTyLC6kwaBm8CnOBSFsxWUtoQ9ceyVe/otOqZL4SoucMmbJ3kOUnK7EQ==
+  /@ts-schema-autogen/main/0.1.1:
+    dependencies:
+      '@ts-schema-autogen/lib': 0.1.1
+      '@ts-schema-autogen/status': 0.1.1
+      '@ts-schema-autogen/types': 0.1.1
+      '@ts-schema-autogen/utils': 0.0.1
+      '@tsfun/object': 0.0.17
+      '@tsfun/pipe': 0.0.11
+      '@types/node': 13.13.5
+      tslib: 1.11.2
+    dev: true
+    resolution:
+      integrity: sha512-IC193iebvbbERdx2DGugDq97ne4Fn+zXNVqTc40QuyTbzTGBES6+DnSfI3t1e2f/jX0xGT1e6pDMN8DbdrK1Hw==
+  /@ts-schema-autogen/schemas/0.1.1:
+    dependencies:
+      '@ts-schema-autogen/types': 0.1.1
+      '@types/node': 13.13.5
+      exec-once: 0.1.6
+      tslib: 1.11.2
+    dev: true
+    resolution:
+      integrity: sha512-cHzhHPJsCQbZCYetSpxRcIEB17MLDOUnuxZiuZ0Yn1BRS72qMwgXqCDckMgGuf9TAsfbkBxUiOIT0C8S7FPYyw==
+  /@ts-schema-autogen/status/0.1.1:
+    dependencies:
+      '@ts-schema-autogen/types': 0.1.1
+      '@ts-schema-autogen/utils': 0.0.1
+      '@types/node': 13.13.5
+      tslib: 1.11.2
+    dev: true
+    resolution:
+      integrity: sha512-zN5KSkk9HjrsgCRFiENYUL7K/fZvK/afQolfSDrqj3nnyuYzRazIn/i2fV5pgTrdEKG3fK/95Zznko7evtK2ow==
+  /@ts-schema-autogen/types/0.1.1:
+    dependencies:
+      '@ts-schema-autogen/utils': 0.0.1
+      '@types/node': 13.13.5
+      tslib: 1.11.2
+      typescript-json-schema: 0.42.0
+    dev: true
+    resolution:
+      integrity: sha512-ePh2vU49xe8Tb4gXytOFDtI/dtSVzQpT1fp5WlyS4KwADZH4Gplj5c3M9t0m7bXl07qUVw5HnF7O6G7iliQ/XQ==
+  /@ts-schema-autogen/utils/0.0.1:
+    dependencies:
+      '@types/node': 13.13.5
+      tslib: 1.11.2
+    dev: true
+    resolution:
+      integrity: sha512-ASFLu03+zcRBaVAeRCTP84WvuHxmpGiksORB8QpE3nOmWC9m+f/dDRTvgTq/t3bNIYVSe1vKs4LutXX5pjhdjA==
+  /@ts-schema-autogen/validate/0.1.1:
+    dependencies:
+      '@ts-schema-autogen/schemas': 0.1.1
+      '@ts-schema-autogen/types': 0.1.1
+      '@tsfun/result': 0.0.16
+      '@types/node': 13.13.5
+      ajv: 6.12.0
+      exec-once: 0.1.6
+      tslib: 1.11.2
+    dev: true
+    resolution:
+      integrity: sha512-5h1xEHsCBk4JZeecLATpEDvCzuQifqA6YzmlEu2C1u8zEMNpv6Y49Yw7ABDGOnam8HQVdnCG6QggKVjVE4GyJQ==
+  /@tsfun/object/0.0.17:
+    dependencies:
+      '@types/node': 13.13.5
+      tslib: 1.11.2
+      utility-types: 3.10.0
+    dev: true
+    resolution:
+      integrity: sha512-H/hRAlGWkoui1ZqIX2iPSQdK07mUF7QZwIkyY5SzwBIe1jVkSRNXmHtm9WvWMuoaGCr3peCZGXphximX3DEzig==
+  /@tsfun/pipe/0.0.11:
+    dependencies:
+      '@tsfun/tap': 0.0.10
+      '@types/node': 13.13.5
+      tslib: 1.11.2
+    dev: true
+    engines:
+      node: '>= 8.9.0'
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+  /@tsfun/prv-option-result-common/0.0.11:
+    dependencies:
+      '@types/node': 13.13.5
+      tslib: 1.11.2
+    dev: true
+    engines:
+      node: '>= 8.9.0'
+    resolution:
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+  /@tsfun/prv-types/0.0.6:
+    dependencies:
+      '@types/node': 13.13.5
+      tslib: 1.11.2
+    dev: true
+    resolution:
+      integrity: sha512-s97gvRX2SjGTdU+Odsi6RgsVFi+xNOx3T6Jew2mo7m7Wj6eJmM0HB0HlFPmwIIi2MtXIpSr71TZmRVcMeU3Atw==
+  /@tsfun/result/0.0.16:
+    dependencies:
+      '@tsfun/prv-option-result-common': 0.0.11
+      '@tsfun/prv-types': 0.0.6
+      '@tsfun/tap': 0.0.10
+      '@types/node': 13.13.5
+      tslib: 1.11.2
+    dev: true
+    engines:
+      node: '>= 8.9.0'
+    resolution:
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+  /@tsfun/tap/0.0.10:
+    dependencies:
+      '@types/node': 13.13.5
+      tslib: 1.11.2
+    dev: true
+    resolution:
+      integrity: sha512-ArfW5g+1BxUXhqWOCOceiR3iviWn6PvDjOHzSBCCw3luYlVJ8JwYMcvj9ZXITBbP33uM8NKbxwzjRGGVckXLdg==
+  /@types/color-name/1.1.1:
+    dev: true
+    resolution:
+      integrity: sha512-rr+OQyAjxze7GgWrSaJwydHStIhHq2lvY3BOC2Mj7KnzI7XK0Uw1TOOdI9lDoajEbSWLiYgoo4f1R51erQfhPQ==
   /@types/expand-tilde/2.0.0:
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     resolution:
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+  /@types/fs-extra/8.1.0:
+    dependencies:
+      '@types/node': 13.13.5
+    dev: true
+    resolution:
+      integrity: sha512-UoOfVEzAUpeSPmjm7h1uk5MH6KZma2z2O7a75onTGjnNvAvMVrPzPL/vBbT65iIGHWj6rokwfmYcmxmlSf2uwg==
+  /@types/js-yaml/3.12.3:
+    resolution:
+      integrity: sha512-otRe77JNNWzoVGLKw8TCspKswRoQToys4tuL6XYVBFxjgeM0RUrx7m3jkaTdxILxeGry3zM8mGYkGXMeQ02guA==
+  /@types/json-schema/7.0.4:
+    dev: true
+    resolution:
+      integrity: sha512-8+KAKzEvSUdeo+kmqnKrqgeE+LcA0tjYWFY7RPProVYwnqDjukzO+3b6dLD56rYX5TdWejnEOLJYOIeh4CXKuA==
   /@types/node-fetch/2.5.7:
     dependencies:
       '@types/node': 13.13.5
@@ -26,18 +190,131 @@ packages:
     resolution:
       integrity: sha512-o2WVNf5UhWRkxlf6eq+jMZDu7kjgpgJfl4xVNlvryc95O/6F2ld8ztKX+qu+Rjyet93WAWm5LjeX9H5FGkODvw==
   /@types/node/13.13.5:
-    dev: false
     resolution:
       integrity: sha512-3ySmiBYJPqgjiHA7oEaIo2Rzz0HrOZ7yrNO5HWyaE5q0lQ3BppDZ3N53Miz8bw2I7gh1/zir2MGVZBvpb1zq9g==
+  /@types/yargs-parser/15.0.0:
+    dev: true
+    resolution:
+      integrity: sha512-FA/BWv8t8ZWJ+gEOnLLd8ygxH/2UFbAvgEonyfN6yWGLKc7zVjbpl2Y4CTjid9h2RfgPP6SEt6uHwEOply00yw==
+  /@types/yargs/15.0.4:
+    dependencies:
+      '@types/yargs-parser': 15.0.0
+    dev: true
+    resolution:
+      integrity: sha512-9T1auFmbPZoxHz0enUFlUuKRy3it01R+hlggyVUMtnCTQRunsQYifnSGb8hET4Xo8yiC0o0r1paW3ud5+rbURg==
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     hasBin: true
     resolution:
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+  /ajv/6.12.0:
+    dependencies:
+      fast-deep-equal: 3.1.1
+      fast-json-stable-stringify: 2.1.0
+      json-schema-traverse: 0.4.1
+      uri-js: 4.2.2
+    resolution:
+      integrity: sha512-D6gFiFA0RRLyUbvijN74DWAjXSFxWKaWP7mldxkVhyhAV3+SWA9HEJPHQ2c9soIeTFJqcSdFDGFgdqs1iUU2Hw==
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+    dev: true
+    engines:
+      node: '>=6'
+    resolution:
+      integrity: sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==
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+    dev: true
+    engines:
+      node: '>=8'
+    resolution:
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+    dependencies:
+      color-convert: 1.9.3
+    dev: true
+    engines:
+      node: '>=4'
+    resolution:
+      integrity: sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==
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+    dependencies:
+      '@types/color-name': 1.1.1
+      color-convert: 2.0.1
+    dev: true
+    engines:
+      node: '>=8'
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+    dependencies:
+      sprintf-js: 1.0.3
+    resolution:
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   /asynckit/0.4.0:
     dev: false
     resolution:
       integrity: sha1-x57Zf380y48robyXkLzDZkdLS3k=
+  /balanced-match/1.0.0:
+    dev: true
+    resolution:
+      integrity: sha1-ibTRmasr7kneFk6gK4nORi1xt2c=
+  /better-path-join/0.0.1:
+    dependencies:
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+      tslib: 1.11.2
+    dev: true
+    resolution:
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+      balanced-match: 1.0.0
+      concat-map: 0.0.1
+    dev: true
+    resolution:
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+    engines:
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+    resolution:
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+  /cliui/5.0.0:
+    dependencies:
+      string-width: 3.1.0
+      strip-ansi: 5.2.0
+      wrap-ansi: 5.1.0
+    dev: true
+    resolution:
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+  /cliui/6.0.0:
+    dependencies:
+      string-width: 4.2.0
+      strip-ansi: 6.0.0
+      wrap-ansi: 6.2.0
+    dev: true
+    resolution:
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+  /color-convert/1.9.3:
+    dependencies:
+      color-name: 1.1.3
+    dev: true
+    resolution:
+      integrity: sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==
+  /color-convert/2.0.1:
+    dependencies:
+      color-name: 1.1.4
+    dev: true
+    engines:
+      node: '>=7.0.0'
+    resolution:
+      integrity: sha512-RRECPsj7iu/xb5oKYcsFHSppFNnsj/52OVTRKb4zP5onXwVF3zVmmToNcOfGC+CRDpfK/U584fMg38ZHCaElKQ==
+  /color-name/1.1.3:
+    dev: true
+    resolution:
+      integrity: sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=
+  /color-name/1.1.4:
+    dev: true
+    resolution:
+      integrity: sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==
   /combined-stream/1.0.8:
     dependencies:
       delayed-stream: 1.0.0
@@ -46,12 +323,43 @@ packages:
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+  '@types/js-yaml': ^3.12.3
   '@types/node': ^13.13.5
   '@types/node-fetch': ^2.5.7
   '@zeit/ncc': ^0.22.1
+  ajv: ^6.12.0
   expand-tilde: ^2.0.2
+  js-yaml: ^3.13.1
   node-fetch: ^2.6.0
   typescript: ^3.8.3
diff --git a/run.sh b/run.sh
index 4732f3d..a33b17f 100755
--- a/run.sh
+++ b/run.sh
@@ -5,4 +5,5 @@ export INPUT_VERSION=4.11.1
 export INPUT_DEST='~/pnpm.temp'
 export INPUT_BIN_DEST='~/pnpm.temp/.bin'
 export INPUT_REGISTRY=https://registry.npmjs.com
+export INPUT_RUN_INSTALL=null
 exec node dist/index.js
diff --git a/src/index.ts b/src/index.ts
index dcfb9aa..ecea472 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,13 +1,19 @@
-import { setFailed } from '@actions/core'
+import { setFailed, saveState, getState } from '@actions/core'
 import getInputs from './inputs'
 import setOutputs from './outputs'
-import install from './install'
+import installPnpm from './install-pnpm'
+import pnpmInstall from './pnpm-install'
+import pruneStore from './pnpm-store-prune'
 
 async function main() {
   const inputs = getInputs()
-  await install(inputs)
+  const isPost = getState('is_post')
+  if (isPost === 'true') return pruneStore(inputs)
+  saveState('is_post', 'true')
+  await installPnpm(inputs)
   console.log('Installation Completed!')
   setOutputs(inputs)
+  pnpmInstall(inputs)
 }
 
 main().catch(error => {
diff --git a/src/inputs/index.ts b/src/inputs/index.ts
index 9fa12ab..aa97623 100644
--- a/src/inputs/index.ts
+++ b/src/inputs/index.ts
@@ -1,11 +1,13 @@
 import { getInput, InputOptions } from '@actions/core'
 import expandTilde from 'expand-tilde'
+import { RunInstall, parseRunInstall } from './run-install'
 
 export interface Inputs {
   readonly version: string
   readonly dest: string
   readonly binDest: string
   readonly registry: string
+  readonly runInstall: RunInstall[]
 }
 
 const options: InputOptions = {
@@ -19,6 +21,7 @@ export const getInputs = (): Inputs => ({
   dest: parseInputPath('dest'),
   binDest: parseInputPath('bin_dest'),
   registry: getInput('registry', options),
+  runInstall: parseRunInstall('run_install'),
 })
 
 export default getInputs
diff --git a/src/inputs/run-install-input.schema.autogen.json b/src/inputs/run-install-input.schema.autogen.json
new file mode 100644
index 0000000..1a70dd1
--- /dev/null
+++ b/src/inputs/run-install-input.schema.autogen.json
@@ -0,0 +1,21 @@
+{
+  "$schema": "https://raw.githubusercontent.com/ksxnodeapps/ts-schema-autogen/master/packages/schemas/config.schema.json",
+  "instruction": {
+    "compilerOptions": {
+      "strict": true,
+      "target": "ES2018",
+      "lib": [
+        "ES2018",
+        "ES2019",
+        "ES2020",
+        "ESNext"
+      ],
+      "moduleResolution": "Node",
+      "esModuleInterop": true,
+      "resolveJsonModule": true
+    },
+    "input": "run-install.ts",
+    "symbol": "RunInstallInput",
+    "output": "run-install-input.schema.json"
+  }
+}
diff --git a/src/inputs/run-install-input.schema.json b/src/inputs/run-install-input.schema.json
new file mode 100644
index 0000000..4a84219
--- /dev/null
+++ b/src/inputs/run-install-input.schema.json
@@ -0,0 +1,39 @@
+{
+  "anyOf": [
+    {
+      "$ref": "#/definitions/RunInstall"
+    },
+    {
+      "type": "array",
+      "items": {
+        "$ref": "#/definitions/RunInstall"
+      }
+    },
+    {
+      "type": [
+        "null",
+        "boolean"
+      ]
+    }
+  ],
+  "definitions": {
+    "RunInstall": {
+      "type": "object",
+      "properties": {
+        "recursive": {
+          "type": "boolean"
+        },
+        "cwd": {
+          "type": "string"
+        },
+        "args": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          }
+        }
+      }
+    }
+  },
+  "$schema": "http://json-schema.org/draft-07/schema#"
+}
diff --git a/src/inputs/run-install.ts b/src/inputs/run-install.ts
new file mode 100644
index 0000000..4e2c265
--- /dev/null
+++ b/src/inputs/run-install.ts
@@ -0,0 +1,40 @@
+import process from 'process'
+import { safeLoad } from 'js-yaml'
+import Ajv from 'ajv'
+import { getInput, error, InputOptions } from '@actions/core'
+import runInstallSchema from './run-install-input.schema.json'
+
+export interface RunInstall {
+  readonly recursive?: boolean
+  readonly cwd?: string
+  readonly args?: readonly string[]
+}
+
+export type RunInstallInput =
+  | null
+  | boolean
+  | RunInstall
+  | RunInstall[]
+
+const options: InputOptions = {
+  required: true,
+}
+
+export function parseRunInstall(name: string): RunInstall[] {
+  const result: RunInstallInput = safeLoad(getInput(name, options))
+  const ajv = new Ajv({
+    allErrors: true,
+    async: false,
+  })
+  const validate = ajv.compile(runInstallSchema)
+  if (!validate(result)) {
+    for (const errorItem of validate.errors!) {
+      error(`with.run_install${errorItem.dataPath}: ${errorItem.message}`)
+    }
+    return process.exit(1)
+  }
+  if (!result) return []
+  if (result === true) return [{ recursive: true }]
+  if (Array.isArray(result)) return result
+  return [result]
+}
diff --git a/src/install/index.ts b/src/install-pnpm/index.ts
similarity index 73%
rename from src/install/index.ts
rename to src/install-pnpm/index.ts
index da85a61..6952ead 100644
--- a/src/install/index.ts
+++ b/src/install-pnpm/index.ts
@@ -1,11 +1,13 @@
-import { setFailed } from '@actions/core'
+import { setFailed, startGroup, endGroup } from '@actions/core'
 import { Inputs } from '../inputs'
 import runSelfInstaller from './run'
 
 export { runSelfInstaller }
 
 export async function install(inputs: Inputs) {
+  startGroup('Running self-installer...')
   const status = await runSelfInstaller(inputs)
+  endGroup()
   if (status) {
     return setFailed(`Something does wrong, self-installer exits with code ${status}`)
   }
diff --git a/src/install/run.ts b/src/install-pnpm/run.ts
similarity index 100%
rename from src/install/run.ts
rename to src/install-pnpm/run.ts
diff --git a/src/pnpm-install/index.ts b/src/pnpm-install/index.ts
new file mode 100644
index 0000000..821e114
--- /dev/null
+++ b/src/pnpm-install/index.ts
@@ -0,0 +1,38 @@
+import { spawnSync } from 'child_process'
+import { setFailed, startGroup, endGroup } from '@actions/core'
+import { Inputs } from '../inputs'
+import { patchPnpmEnv } from '../utils'
+
+export function runPnpmInstall(inputs: Inputs) {
+  const env = patchPnpmEnv(inputs)
+
+  for (const options of inputs.runInstall) {
+    const args = ['install']
+    if (options.recursive) args.unshift('recursive')
+    if (options.args) args.push(...options.args)
+
+    const cmdStr = ['pnpm', ...args].join(' ')
+    startGroup(`Running ${cmdStr}...`)
+
+    const { error, status } = spawnSync('pnpm', args, {
+      stdio: 'inherit',
+      cwd: options.cwd,
+      shell: true,
+      env,
+    })
+
+    endGroup()
+
+    if (error) {
+      setFailed(error)
+      continue
+    }
+
+    if (status) {
+      setFailed(`Command ${cmdStr} (cwd: ${options.cwd}) exits with status ${status}`)
+      continue
+    }
+  }
+}
+
+export default runPnpmInstall
diff --git a/src/pnpm-store-prune/index.ts b/src/pnpm-store-prune/index.ts
new file mode 100644
index 0000000..792552a
--- /dev/null
+++ b/src/pnpm-store-prune/index.ts
@@ -0,0 +1,31 @@
+import { spawnSync } from 'child_process'
+import { warning, startGroup, endGroup } from '@actions/core'
+import { Inputs } from '../inputs'
+import { patchPnpmEnv } from '../utils'
+
+export function pruneStore(inputs: Inputs) {
+  if (inputs.runInstall.length === 0) {
+    console.log('Pruning is unnecessary.')
+    return
+  }
+
+  startGroup('Running pnpm store prune...')
+  const { error, status } = spawnSync('pnpm', ['store', 'prune'], {
+    stdio: 'inherit',
+    shell: true,
+    env: patchPnpmEnv(inputs)
+  })
+  endGroup()
+
+  if (error) {
+    warning(error)
+    return
+  }
+
+  if (status) {
+    warning(`command pnpm store prune exits with code ${status}`)
+    return
+  }
+}
+
+export default pruneStore
diff --git a/src/utils/index.ts b/src/utils/index.ts
new file mode 100644
index 0000000..c4fad7b
--- /dev/null
+++ b/src/utils/index.ts
@@ -0,0 +1,8 @@
+import process from 'process'
+import path from 'path'
+import { Inputs } from '../inputs'
+
+export const patchPnpmEnv = (inputs: Inputs): NodeJS.ProcessEnv => ({
+  ...process.env,
+  PATH: inputs.binDest + path.delimiter + process.env.PATH
+})