Sample of building with ko

.github/workflows/image-build.yml

@@ -16,38 +16,6 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
+      - uses: ko-build/[email protected]
+      - run: ko build --platform=all ./cmd/server --image-label=org.opencontainers.image.source=https://github.com/stacklok/mediator,org.opencontainers.image.title="Stacklok Mediator",org.opencontainers.image.licenses=Apache-2.0,org.opencontainers.image.vendor=Stacklok
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-
-      - name: Docker metadata
-        id: meta
-        uses: docker/metadata-action@v4
-        with:
-          images: ghcr.io/stacklok/mediator
-          tags: |
-            type=semver,prefix=v,pattern={{version}}
-            type=sha,format=long
-            # set latest tag for default branch
-            type=raw,value=latest,enable={{is_default_branch}}
-          labels: |
-            org.opencontainers.image.source=https://github.com/stacklok/mediator
-            org.opencontainers.image.title=Stacklok Mediator
-            org.opencontainers.image.licenses=Apache-2.0
-            org.opencontainers.image.vendor=Stacklok
-
-      - name: Build container images and push
-        id: docker_build
-        uses: docker/build-push-action@v4
-        with:
-          context: .
-          file: Dockerfile
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-          # Only push to the registry if we're building the default branch
-          push: ${{ github.ref == 'refs/heads/main' }}
-          # ARM builds take a long time due to QEMU emulation. For PRs
-          # we only build amd64, and for the default branch we build both.
-          platforms: linux/amd64${{ github.event_name != 'pull_request' && ', linux/arm64' || '' }}

README.md

@@ -71,6 +71,17 @@ make run-server
 
 The application will be available on `http://localhost:8080` and gRPC on `localhost:8090`.
 
+## Running the server under Compose:
+
+**NOTE: the command will be either `docker-compose` or `podman-compose`, depending on which tool you installed.**  You'll need to install the [`ko`](https://ko.build/install/) tool do the build and run.
+
+```bash
+# The repo to push to; "ko.local" is a special string meaning your local Docker repo
+KO_DOCKER_REPO=ko.local
+# ko adds YAML document separators at the end of each document, which docker-compose doesn't like
+docker-compose -f <(ko resolve -f docker-compose.yaml | sed 's/^---$//') up
+```
+
 ## Run the tests
 
 Note that you need to have [started the database and loaded the schema](#initialize-the-database) before running the tests:

docker-compose.yaml

@@ -27,7 +27,7 @@ services:
     ports:
       - "8080:8080"
       - "8090:8090"
-    image: ghcr.io/stacklok/mediator:latest
+    image: ko://github.com/stacklok/mediator/cmd/server
     networks:
       - app_net
     depends_on:
@@ -40,7 +40,7 @@ services:
       "--yes",
       "--db-host=postgres",
       ]
-    image: ghcr.io/stacklok/mediator:latest
+    image: ko://github.com/stacklok/mediator/cmd/server
     networks:
       - app_net
     deploy: