feat: add a seperate action to setup project

.github/actions/setup-project/action.yml

@@ -0,0 +1,27 @@
+name: Setup Project
+description: Installs Node.js, NPM and dependencies and sets up the project
+
+inputs:
+  DECRYPTION_SECRET:
+    description: The secret used to decrypt the files
+    required: true
+
+runs:
+  using: 'composite'
+  steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+
+    - name: Setup node
+      uses: actions/setup-node@v4
+      with:
+        node-version-file: 'package.json'
+        cache: 'npm'
+
+    - name: Install dependencies
+      shell: bash
+      run: npm ci --prefer-offline --no-audit --progress=false
+
+    - uses: amplium/git-crypt-action@master
+      with:
+        key_encoded: ${{ inputs.DECRYPTION_SECRET }}

.github/workflows/ci.yml

@@ -17,26 +17,22 @@ jobs:
     timeout-minutes: 15
 
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - uses: amplium/git-crypt-action@master
+      - name: Setup project
+        uses: ./.github/actions/setup-project
         with:
-          key_encoded: ${{ secrets.DECRYPTION_SECRET }}
+          DECRYPTION_SECRET: ${{ secrets.DECRYPTION_SECRET }}
 
-      - run: npm run lint:quiet
+      - run: npm run eslint:quiet
 
   prettier:
     runs-on: ubuntu-latest
 
     timeout-minutes: 15
 
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - uses: amplium/git-crypt-action@master
+      - name: Setup project
+        uses: ./.github/actions/setup-project
         with:
-          key_encoded: ${{ secrets.DECRYPTION_SECRET }}
+          DECRYPTION_SECRET: ${{ secrets.DECRYPTION_SECRET }}
 
       - run: npm run prettier:check      -

package.json

@@ -27,7 +27,7 @@
     "start-checker": "node check-for-changes.mjs",
     "prettier:check": "prettier --check .",
     "prettier:write": "prettier --write .",
-    "lint:quiet": "npm run lint -- --quiet",
+    "eslint:quiet": "npm run lint -- --quiet",
     "eslint:fix": "eslint . --ignore-path .gitignore --ext .mjs,.js --fix"
   }
 }