feat: add Docker image build to release pipeline

Author: JonCanning

.github/workflows/release.yml

@@ -7,6 +7,7 @@ on:
 
 permissions:
   contents: write
+  packages: write
 
 jobs:
   release:
@@ -20,6 +21,14 @@ jobs:
         with:
           go-version-file: go.mod
 
+      - uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - uses: docker/setup-buildx-action@v3
+
       - uses: goreleaser/goreleaser-action@v6
         with:
           version: "~> v2"

.goreleaser.yaml

@@ -1,7 +1,8 @@
 version: 2
 
 builds:
-  - main: ./main.go
+  - id: issuebot
+    main: ./main.go
     binary: issuebot
     env:
       - CGO_ENABLED=0
@@ -30,6 +31,18 @@ homebrew_casks:
     description: Autonomous GitHub issue processor powered by any CLI tool
     license: MIT
 
+dockers_v2:
+  - ids:
+      - issuebot
+    images:
+      - ghcr.io/tinybluerobots/issuebot
+    tags:
+      - "{{ .Version }}"
+      - latest
+    platforms:
+      - linux/amd64
+      - linux/arm64
+
 changelog:
   sort: asc
   filters:

Dockerfile

@@ -0,0 +1,4 @@
+FROM scratch
+ARG TARGETPLATFORM
+COPY ${TARGETPLATFORM}/issuebot /usr/local/bin/issuebot
+ENTRYPOINT ["issuebot"]

README.md

@@ -82,6 +82,19 @@ issuebot --local --command "./my-issue-handler.sh {prompt}"
 | `--log-file` | | Log file path (defaults to stdout) |
 | `--ntfy-topic` | | [ntfy.sh](https://ntfy.sh) topic for error notifications |
 
+### Docker
+
+Mount your CLI tool and any config it needs from the host:
+
+```bash
+docker run -v /usr/local/bin/claude:/usr/local/bin/claude \
+  -v ~/.claude:/root/.claude \
+  ghcr.io/tinybluerobots/issuebot:latest \
+  --repo owner/repo --command "claude -p {prompt} --dangerously-skip-permissions"
+```
+
+Adjust the mounts for whichever CLI you use (e.g. `copilot`, `gemini`).
+
 ### Authentication
 
 Requires a GitHub token. Set `GITHUB_TOKEN` or run `gh auth login`.