Merge pull request #41 from lazyfrosch/feature/containers

Add container image build

.github/workflows/images.yml

@@ -0,0 +1,43 @@
+name: Publish container images
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - 'v*'
+  pull_request:
+
+jobs:
+  containers:
+    name: Build and push container image registries
+    runs-on: ubuntu-latest
+
+    permissions:
+      packages: write
+      contents: read
+
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v3
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+        if: startsWith(github.ref, 'refs/tags/v') || github.ref == format('refs/heads/{0}', github.event.repository.default_branch)
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v4
+        with:
+          images: ghcr.io/${{ github.repository }}
+
+      - name: Build and push Docker images
+        uses: docker/build-push-action@v3
+        with:
+          push: ${{ startsWith(github.ref, 'refs/tags/v') || github.ref == format('refs/heads/{0}', github.event.repository.default_branch) }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -1,16 +1,11 @@
 FROM golang:1.19.4 as builder
 WORKDIR /build
-COPY go.mod .
-COPY go.sum .
-RUN go mod download
+COPY . /build/
 
-# Build
-COPY . .
-RUN git rev-parse --short HEAD
-RUN GIT_COMMIT=$(git rev-parse --short HEAD) && \
-    CGO_ENABLED=0 go build -o app -ldflags "-X main.GitCommit=${GIT_COMMIT}"
+RUN go mod download
+RUN CGO_ENABLED=0 go build -o app
 
-FROM alpine:latest 
+FROM alpine:latest
 RUN apk update && apk add ca-certificates && rm -rf /var/cache/apk/*
 WORKDIR /app
 COPY --from=builder /build/app /app