🔨 Add dockerfile and github actions

.dockerignore

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+node_modules/

.github/workflows/publish.yml

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+name: Docker Publish
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Log in to GitHub Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ghcr.io/${{ github.repository_owner }}/floating-island
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          platforms: linux/amd64

Dockerfile

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+# Stage 1: Build the application
+FROM oven/bun:1 as builder
+WORKDIR /app
+
+# Copy dependency definition files
+COPY package.json ./
+
+# Install dependencies
+RUN bun install
+
+# Copy the rest of the application code
+COPY . .
+
+# Build the Nuxt application
+RUN bun run build
+
+# Stage 2: Create the production image
+FROM node:20-slim as runner
+WORKDIR /app
+
+# Copy the built output from the builder stage
+COPY --from=builder /app/.output ./.output
+
+# Set environment variables for the Nuxt server
+ENV HOST=0.0.0.0
+ENV PORT=3000
+
+# Expose the port the app runs on
+EXPOSE 3000
+
+# The command to run the application
+CMD ["node", ".output/server/index.mjs"]