Add Docker build workflow

.github/workflows/docker-publish.yml

@@ -0,0 +1,59 @@
+name: Docker Publish
+
+on:
+  push:
+    branches: [master, main]
+    tags: ['v*']
+  pull_request:
+    branches: [master, main]
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log into registry ${{ env.REGISTRY }}
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          tags: |
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=ref,event=branch
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=sha,prefix=,suffix=,format=short
+
+      - name: Build and push Docker image
+        id: build-and-push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          platforms: linux/amd64,linux/arm64

Dockerfile

@@ -1,22 +1,32 @@
-FROM node:22-bookworm
+FROM node:22-bookworm-slim
 
 WORKDIR /app
 
-# Install dependencies for native modules
-RUN apt-get update && apt-get install -y \
+# Install dependencies for native modules and prebuilt-tdlib
+RUN apt-get update && apt-get install -y --no-install-recommends \
     build-essential \
     libvips-dev \
     python3 \
+    ca-certificates \
+    curl \
     && rm -rf /var/lib/apt/lists/*
 
 # Copy package files
 COPY package*.json ./
 
-# Install dependencies
+# Install dependencies (prebuilt-tdlib will download TDLib binary automatically)
 RUN npm install --omit=dev
 
-# Copy source
+# Verify TDLib binary is present
+RUN ls -la node_modules/prebuilt-tdlib/
+
+# Copy source code
 COPY . .
 
+# Create non-root user for security
+RUN groupadd -r quotly && useradd -r -g quotly quotly \
+    && chown -R quotly:quotly /app
+USER quotly
+
 # Default command (overridden in docker-compose)
 CMD ["node", "updates-collector.js"]