Add CI to build container on push

.github/actions/prune-containers/index.js

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+const { Octokit } = require("@octokit/rest");
+const dayjs = require("dayjs");
+
+async function run() {
+  const today = dayjs();
+
+  const client = new Octokit({
+    auth: process.env.GITHUB_TOKEN,
+  });
+
+  const versions =
+    await client.packages.getAllPackageVersionsForPackageOwnedByAuthenticatedUser(
+      {
+        package_type: "container",
+        package_name: "pkmn-tcg-app",
+      }
+    );
+
+  let versionsRemoved = 0;
+
+  for (const version of versions.data) {
+    // delete untagged versions that are older than 7 days
+    if (
+      today.diff(dayjs(version.created_at), "days") > 7 &&
+      version.metadata.container.tags.length === 0
+    ) {
+      await client.packages.deletePackageVersionForAuthenticatedUser({
+        package_type: "container",
+        package_name: "pkmn-tcg-app",
+        package_version_id: version.id,
+      });
+      versionsRemoved++;
+    }
+  }
+
+  console.log(`Image versions pruned: ${versionsRemoved}`);
+}
+
+run();

.github/actions/prune-containers/package.json

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+{
+  "name": "prune-containers",
+  "version": "1.0.0",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "description": "",
+  "dependencies": {
+    "@octokit/rest": "^21.0.1",
+    "dayjs": "^1.11.12"
+  }
+}

.github/workflows/docker.yml

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+on:
+  push:
+    branches:
+      - "main"
+name: Docker
+jobs:
+  build:
+    name: Build Container
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      packages: write
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Login to Docker Hub
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./Dockerfile
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ghcr.io/lannonbr/pokemon-tcg-app:latest
+      - name: Prune old images
+        run: |
+          cd .github/actions/prune-containers
+          npm install
+          node index.js
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}