feat: add Dockerfile, Gitea Actions CI, and Artifact Hub metadata

Multi-stage Dockerfile produces a lightweight image with the compiled
plugin at /plugins/. Gitea Actions workflow triggers on tag push (v*),
builds the plugin, pushes to the Gitea container registry, and creates
a release with the tarball attached.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitea/workflows/release.yaml

@@ -0,0 +1,42 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    container: node:20
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build plugin
+        run: npx @kinvolk/headlamp-plugin build
+
+      - name: Package tarball
+        run: npx @kinvolk/headlamp-plugin package
+
+      - name: Install Docker CLI
+        run: apt-get update && apt-get install -y docker.io
+
+      - name: Build Docker image
+        run: docker build -t git.farh.net/${{ github.repository }}:${{ github.ref_name }} -t git.farh.net/${{ github.repository }}:latest .
+
+      - name: Push Docker image
+        run: |
+          echo "${{ secrets.REGISTRY_TOKEN }}" | docker login git.farh.net -u ${{ github.actor }} --password-stdin
+          docker push git.farh.net/${{ github.repository }}:${{ github.ref_name }}
+          docker push git.farh.net/${{ github.repository }}:latest
+
+      - name: Create release
+        uses: akkuman/gitea-release-action@v1
+        with:
+          files: |
+            *.tar.gz
+          token: ${{ github.token }}

Dockerfile

@@ -0,0 +1,9 @@
+FROM node:20-alpine AS build
+WORKDIR /app
+COPY package.json package-lock.json* ./
+RUN npm ci --ignore-scripts
+COPY src/ src/
+RUN npx @kinvolk/headlamp-plugin build
+
+FROM alpine:3.20
+COPY --from=build /app/dist/ /plugins/polaris-headlamp-plugin/

artifacthub-repo.yml

@@ -0,0 +1,4 @@
+repositoryID: polaris-headlamp-plugin
+owners:
+  - name: farhoodliquor
+    email: ""

package.json

@@ -5,6 +5,7 @@
   "scripts": {
     "start": "headlamp-plugin start",
     "build": "headlamp-plugin build",
+    "package": "headlamp-plugin package",
     "tsc": "tsc --noEmit"
   },
   "devDependencies": {