Use shared github action for checkout/install

Author: venables

.github/actions/check/action.yml

@@ -4,14 +4,8 @@ description: "Install dependencies and run formatting, linting, type checking, a
 runs:
   using: "composite"
   steps:
-    - name: Setup Bun
-      uses: oven-sh/setup-bun@v2
-      with:
-        bun-version: latest
-
-    - name: Install dependencies
-      shell: bash
-      run: bun install --frozen-lockfile --prefer-offline
+    - name: Setup environment
+      uses: ./.github/actions/setup
 
     - name: Run checks
       shell: bash

.github/actions/setup/action.yml

@@ -0,0 +1,17 @@
+name: "Setup Node and Dependencies"
+description: "Checkout code, setup Bun, and install dependencies"
+
+runs:
+  using: "composite"
+  steps:
+    - name: Checkout code
+      uses: actions/checkout@v5
+
+    - name: Setup Bun
+      uses: oven-sh/setup-bun@v2
+      with:
+        bun-version: latest
+
+    - name: Install dependencies
+      shell: bash
+      run: bun install --frozen-lockfile --prefer-offline

.github/workflows/check.yml

@@ -12,5 +12,4 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
       - uses: ./.github/actions/check

.github/workflows/deploy.yml

@@ -12,7 +12,6 @@ jobs:
     if: github.event.action != 'closed'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
       - uses: ./.github/actions/check
 
   # Deploy preview environment on PRs
@@ -27,15 +26,7 @@ jobs:
       preview-url: ${{ steps.deploy.outputs.deployment-url }}
       db-name: ${{ steps.setup-db.outputs.db-name }}
     steps:
-      - uses: actions/checkout@v4
-
-      - name: Setup Bun
-        uses: oven-sh/setup-bun@v2
-        with:
-          bun-version: latest
-
-      - name: Install dependencies
-        run: bun install --frozen-lockfile
+      - uses: ./.github/actions/setup
 
       - name: Setup preview database and run migrations
         id: setup-db
@@ -154,15 +145,7 @@ jobs:
       name: production
       url: ${{ vars.BETTER_AUTH_URL }}
     steps:
-      - uses: actions/checkout@v4
-
-      - name: Setup Bun
-        uses: oven-sh/setup-bun@v2
-        with:
-          bun-version: latest
-
-      - name: Install dependencies
-        run: bun install --frozen-lockfile
+      - uses: ./.github/actions/setup
 
       - name: Run database migrations
         uses: cloudflare/wrangler-action@v3