fix: add github workflows

Author: andersh

.github/workflows/image.yml

@@ -0,0 +1,29 @@
+name: Docker Image
+
+on:
+  push:
+    tags: [ 'v*.*.*' ]
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: | 
+            ghcr.io/${{ github.repository }}:${{ github.ref_name }}
+            ghcr.io/${{ github.repository }}:latest
+          build-args: |
+            VERSION=${{ github.ref_name }}

.github/workflows/lint.yml

@@ -0,0 +1,21 @@
+name: Lint
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.22'
+      - name: Run go fmt
+        run: go fmt ./...
+      - name: Run go vet
+        run: go vet ./...

.github/workflows/release.yml

@@ -0,0 +1,22 @@
+name: Release
+
+on:
+  push:
+    tags: [ 'v*.*.*' ]
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: '1.22'
+      - name: Build
+        run: go build -ldflags "-X main.version=${GITHUB_REF_NAME}" -v ./...
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          files: |
+            ./web_proxy_cache

Dockerfile

@@ -0,0 +1,15 @@
+# Build stage
+FROM golang:1.22-alpine AS builder
+WORKDIR /app
+COPY go.mod go.sum ./
+RUN go mod download
+COPY . .
+ARG VERSION=dev
+RUN CGO_ENABLED=0 GOOS=linux go build -ldflags "-X main.version=${VERSION}" -o web_proxy_cache .
+
+# Final image
+FROM alpine:3.19
+WORKDIR /app
+COPY --from=builder /app/web_proxy_cache .
+EXPOSE 8080
+ENTRYPOINT ["./web_proxy_cache"]