feat: CI pipeline + push to GH CR

.github/workflows/ci.yml

@@ -0,0 +1,91 @@
+name: CI Pipeline
+
+on:
+  push:
+    branches: [ "cd" ]
+  pull_request:
+    branches: [ main, master ]
+
+jobs:
+  test:
+    name: Run Tests
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.21'
+        cache: true
+
+    - name: Install dependencies
+      run: |
+        cd gin-api
+        go mod download
+
+    - name: Run tests
+      run: |
+        cd gin-api
+        go test ./...
+
+    - name: Run test coverage
+      run: |
+        cd gin-api
+        go test -cover ./...
+
+  build:
+    name: Build and Push Docker Images
+    runs-on: ubuntu-latest
+    needs: test
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+
+    - name: Login to GitHub Container Registry
+      if: github.event_name != 'pull_request'
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Extract backend metadata
+      id: meta-backend
+      uses: docker/metadata-action@v4
+      with:
+        images: ghcr.io/${{ github.repository_owner }}/backend
+        tags: |
+          type=ref,event=branch
+          type=ref,event=pr
+          type=sha,format=short
+
+    - name: Build and push backend image
+      uses: docker/build-push-action@v4
+      with:
+        context: ./gin-api
+        file: ./gin-api/Dockerfile
+        push: ${{ github.event_name != 'pull_request' }}
+        tags: ${{ steps.meta-backend.outputs.tags }}
+        labels: ${{ steps.meta-backend.outputs.labels }}
+        cache-from: type=gha
+        cache-to: type=gha,mode=max
+
+    - name: Build seeder image
+      uses: docker/build-push-action@v4
+      with:
+        context: ./gin-api
+        file: ./gin-api/Dockerfile.seeder
+        push: false
+        tags: sviper-seeder:latest
+        cache-from: type=gha
+        cache-to: type=gha,mode=max