Merge pull request #14 from gbozee/master

Optimized dockerfile for small images and Github action to build on new release.

.dockerignore

@@ -1,2 +1 @@
 db
-templates

.github/workflows/docker-build.yml

@@ -0,0 +1,36 @@
+name: Docker Build and Publish
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  build-and-publish:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+
+    - name: Login to GitHub Container Registry
+      uses: docker/login-action@v2
+      with:
+        registry: ghcr.io
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Build and push Docker image
+      uses: docker/build-push-action@v4
+      with:
+        context: .
+        file: ./Dockerfile-optimized
+        push: ${{ github.event_name != 'pull_request' }}
+        tags: |
+          ghcr.io/${{ github.repository }}:latest
+          ghcr.io/${{ github.repository }}:${{ github.sha }}
+        cache-from: type=gha
+        cache-to: type=gha,mode=max

.gitignore

@@ -1,3 +1,3 @@
 db/
 .env
-wot-relay
+wot-relay

Dockerfile-optimized

@@ -0,0 +1,44 @@
+# Stage 1: Build the Go application
+FROM golang:bookworm AS builder
+
+# Set the working directory within the container
+WORKDIR /app
+
+# Copy go.mod and go.sum files
+COPY go.mod go.sum ./
+
+# Download dependencies
+RUN go mod download
+
+# Copy the rest of the application source code
+COPY . .
+
+# Set fixed environment variables for build
+ENV DB_PATH="db"
+ENV INDEX_PATH="templates/index.html"
+ENV STATIC_PATH="templates/static"
+
+# touch a .env
+RUN touch .env
+
+# Build the Go application
+RUN go build -o main .
+
+# Stage 2: Create a minimal image to run the Go application
+FROM debian:bookworm-slim
+
+# Set the working directory within the container
+WORKDIR /app
+
+# Copy the Go binary from the builder stage
+COPY --from=builder /app/main /app/
+
+# Copy any necessary files like templates, static assets, etc.
+COPY --from=builder /app/templates /app/templates
+COPY --from=builder /app/.env /app/
+
+# Expose the port that the application will run on
+EXPOSE 3334
+
+# Set the command to run the executable
+CMD ["./main"]