feat: build & release cross-platform Docker images (#1178)

* feat: add dockerfile and docker-compose

* build docker images on release

* add Docker dependencies to release.yaml

* remove docker compose for now

* fix license mismatch

* add docker-compose

* rename volume

* add WF dispatch for debugging

.github/workflows/release.yaml

@@ -3,13 +3,32 @@ on:
   push:
     tags:
       - "v*"
+  workflow_dispatch:
+
 jobs:
   goreleaser:
     runs-on: macos-latest
+    env:
+      # Necessary for Docker manifest
+      DOCKER_CLI_EXPERIMENTAL: "enabled"
     steps:
+      # Docker is not included on macos-latest
+      - uses: docker-practice/actions-setup-docker@v1
+
       - uses: actions/checkout@v3
         with:
           fetch-depth: 0
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Docker Login
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
       - uses: actions/setup-go@v3
         with:
           go-version: "~1.18"