add docker build workflow

.github/workflows/docker-build.yml

@@ -0,0 +1,37 @@
+name: Build Docker image and publish to GHCR
+
+on:
+  push:
+    branches: [ main ]
+    tags: [ v* ]
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: hbtgmbh/air-pollution-service
+  BUILD_ID: ${{github.run_number}}
+
+jobs:
+  test:
+    name: Test and lint
+    uses: HBTGmbH/air-pollution-service/.github/workflows/test.yml@main
+
+  build:
+    runs-on: ubuntu-latest
+    needs: [test]
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v3
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build Docker image
+        run: docker build -t ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.BUILD_ID }} .
+
+      - name: Push Docker image to Docker Hub
+        run: docker push ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ env.BUILD_ID }}

.github/workflows/test.yml

@@ -1,28 +1,33 @@
 name: Test
-on: [push]
+
+on:
+  push:
+  workflow_call:
 
 jobs:
   test:
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        go-version: [ '1.22.x' ]
 
     steps:
       - uses: actions/checkout@v4
+
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ${{ matrix.go-version }}
+          go-version: '1.22.x'
+
       - name: Install Dependencies
         run: go get ./...
+
       - name: Build
         run: go build ./...
+
       - name: Run tests
-        run: go test ./... -json > TestResults-${{ matrix.go-version }}.json
+        run: go test ./... -json > TestResults-.json
+
       - name: Upload test results
         uses: actions/upload-artifact@v4
         if: ${{ always() }}
         with:
-          name: Go-results-${{ matrix.go-version }}
-          path: TestResults-${{ matrix.go-version }}.json
+          name: Go-results
+          path: TestResults.json

Dockerfile

@@ -3,9 +3,9 @@ WORKDIR /air-pollution-service
 
 RUN apk add --no-cache gcc musl-dev
 
-COPY go.mod go.sum ./
-RUN go mod download
 COPY . .
+RUN go mod tidy
+RUN go get ./...
 
 RUN go build -ldflags '-w -s' -a -o ./bin/server ./cmd/server