Add CI step to build and push images to ghcr

.github/workflows/ci.yaml

@@ -49,6 +49,12 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/v')
     runs-on: ubuntu-latest
     steps:
+      - name: Set up QEMU
+        id: qemu
+        uses: docker/setup-qemu-action@v1
+        with:
+          image: tonistiigi/binfmt:latest
+          platforms: all
       - uses: actions/checkout@v3
       - name: Put back the git branch into git (Earthly uses it for tagging)
         run: |
@@ -67,6 +73,10 @@ jobs:
             --RELEASE_VERSION=${GITHUB_REF:10} \
             --GITHUB_TOKEN=${{ secrets.GITHUB_TOKEN }}
 
+      - name: Build and push docker images
+        run: |
+          earthly --ci +multi-image --RELEASE_VERSION=${GITHUB_REF:10}
+
       - name: Put back the git branch into git (Earthly uses it for tagging)
         run: |
           branch=""

Earthfile

@@ -47,12 +47,16 @@ image:
   ENV NODE_ENV=production
   ENV ALLOW_PORTS=8000-29999
   COPY +build/build /app/build
-  RUN ls -al /app/build
   ENTRYPOINT ["/app/build/frp-port-keeper"]
   SAVE IMAGE --push ${TARGET_DOCKER_REGISTRY}/frp-port-keeper:$RELEASE_VERSION
 
 multi-image:
-  BUILD --platform=linux/amd64 --platform=linux/arm64 +build
+  ARG RELEASE_VERSION=latest
+  # Since oven/bun supply only the linux/amd64 and linux/arm64 platform images,
+  # we build only for them.
+  BUILD --platform=linux/amd64 --platform=linux/arm64 \
+        +image \
+        --RELEASE_VERSION=${RELEASE_VERSION}
 
 multi-build:
   FROM +install

README.md

@@ -148,4 +148,5 @@ The response body will be a JSON with the following structure:
 - [ ] Implement proper logging system
 - [ ] Pass `allow_ports` param via cli
 - [x] Cross compile for other platforms (currently supports only amd64)
+- [ ] Build docker images for other platforms (currently supports only linux/amd64 and linux/arm64)
 - [ ] Update systemd files and instructions to run the plugin as systemd service