Publish automatically in GitHub Actions

.github/workflows/build-and-push.yaml

@@ -0,0 +1,35 @@
+name: Build and publish container images
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  build-push-images:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Log in to GitHub Container Registry
+        uses: redhat-actions/podman-login@v1
+        with:
+          username: ${{ github.actor }}
+          password: ${{ github.token }}
+          # TODO use {{ github.repository_owner }} when https://github.com/redhat-actions/podman-login/issues/44 is fixed
+          registry: ghcr.io/seagl
+
+      - name: Checkout Repo
+        uses: actions/checkout@v1
+
+      - name: Build container images
+        # Truly the reason this is Podman and not Docker is because I copied this workflow from a RHEL container stack repo and like
+        # #lazy
+        run: podman build --format docker -t synapse-dev-env ${{ matrix.version }}
+
+      - name: Push container images
+        if: github.ref == 'refs/heads/main' && github.event_name == 'push'
+        uses: redhat-actions/push-to-registry@v2
+        with:
+          image: synapse-dev
+          registry: ghcr.io/seagl

Dockerfile

@@ -1,4 +1,4 @@
-FROM matrixdotorg/synapse:v1.116.0
+FROM docker.io/matrixdotorg/synapse:v1.116.0
 
 LABEL org.opencontainers.image.source=https://github.com/SeaGL/matrix-synapse-dev-image
 LABEL org.opencontainers.image.description="Developer environment-optimized Matrix Synapse image"

README.md

@@ -11,7 +11,7 @@ It comes with **zero security support**! Also the scripts are a little sketchy a
 ## Install
 
 ```bash
-$ docker pull synapse-dev # TODO
+$ docker pull ghcr.io/seagl/synapse-dev-env
 ```
 
 ## Usage