feat: Add docker image builds

.dockerignore

@@ -0,0 +1,5 @@
+README
+.github
+main
+tailservice
+*.exe

.github/dependabot.yml

@@ -1,7 +1,19 @@
 version: 2
 updates:
   - directory: /
-    package-ecosystem: gomod 
+    package-ecosystem: gomod
     rebase-strategy: auto
     schedule:
-      interval: daily
+      interval: daily
+
+  - directory: /
+    package-ecosystem: docker
+    rebase-strategy: auto
+    schedule:
+      interval: daily
+
+  - directory: /
+    package-ecosystem: github-actions
+    rebase-strategy: auto
+    schedule:
+      interval: daily

.github/workflows/release.yml

@@ -3,6 +3,9 @@ name: Release
 on:
   release:
     types: [published]
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
 
 jobs:
   build:
@@ -30,4 +33,49 @@ jobs:
           token: ${{ secrets.GITHUB_TOKEN }}
           overwrite: true
           files: |
-            tailservice-${{ matrix.os }}-${{ matrix.arch }}
+            tailservice-${{ matrix.os }}-${{ matrix.arch }}
+
+  docker:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+    steps:
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Setup Docker buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: set environment variables
+        run: |
+          image="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}"
+          image="$(echo $image | tr '[:upper:]' '[:lower:]')"
+          echo "FULL_IMAGE_NAME=${image}" >> $GITHUB_ENV
+
+      - name: Log into registry ${{ env.REGISTRY }}
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.FULL_IMAGE_NAME }}
+          tags: |
+            type=ref,event=branch
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

@@ -0,0 +1,19 @@
+FROM --platform=${BUILDPLATFORM:-linux/amd64} golang:1.22.6 as builder
+
+ARG TARGETPLATFORM
+ARG BUILDPLATFORM
+ARG TARGETOS
+ARG TARGETARCH
+
+WORKDIR /app/
+ADD . .
+RUN CGO_ENABLED=0 GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -ldflags="-w -s" -o tailservice main.go
+
+FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine:3.20.2
+
+RUN adduser -D -u 1000 tailservice -h /app/data
+VOLUME /app/data
+
+WORKDIR /app/
+COPY --from=builder /app/tailservice /app/tailservice
+ENTRYPOINT ["/app/tailservice"]