feat: create reusable action for setting up Docker environment in workflows

.github/actions/setup-docker-environment/action.yml

@@ -0,0 +1,14 @@
+name: "Setup Docker Environment"
+description: "Common steps for setting up Docker build environment (checkout, QEMU, and Buildx)"
+
+runs:
+  using: "composite"
+  steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4.2.2
+
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v3.4.0
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3.9.0

.github/workflows/feature-pr-build.yml

@@ -1,4 +1,4 @@
-name: Build Docker Image for Feature PRs
+name: Build Docker Image for Pull Request
 
 on:
   pull_request:
@@ -10,19 +10,14 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4.2.2
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3.4.0
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3.9.0
+      - name: Setup Docker Environment
+        uses: ./.github/actions/setup-docker-environment
 
       - name: Build Docker image
         uses: docker/build-push-action@v6.13.0
         with:
           context: .
+          push: false
           tags: ${{ github.repository_owner }}/${{ github.event.repository.name }}:${{ github.event.pull_request.number }}
           platforms: |
             linux/amd64

.github/workflows/main.yml

@@ -12,14 +12,8 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4.2.2
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3.4.0
-      
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3.9.0
+      - name: Setup Docker Environment
+        uses: ./.github/actions/setup-docker-environment
         
       - name: Log in to Docker registry
         uses: docker/login-action@v3.3.0