feat(docker): disable Next.js telemetry in containerized deployments

- Add NEXT_TELEMETRY_DISABLED=1 to Dockerfile (builder and runner stages)
- Add NEXT_TELEMETRY_DISABLED=1 to docker-compose.yml
- Add build-args to GitHub Actions workflow
- Document environment variables in README

This ensures no telemetry data is collected from containerized
deployments, respecting user privacy and reducing network overhead.

.github/workflows/docker-build.yml

@@ -63,6 +63,8 @@ jobs:
           cache-from: type=gha
           cache-to: type=gha,mode=max
           platforms: linux/amd64,linux/arm64
+          build-args: |
+            NEXT_TELEMETRY_DISABLED=1
 
       - name: Image digest
         run: echo ${{ steps.meta.outputs.digest }}

Dockerfile

@@ -13,6 +13,9 @@ RUN npm ci --only=production && \
 FROM node:20-alpine AS builder
 WORKDIR /app
 
+# Disable Next.js telemetry during build
+ENV NEXT_TELEMETRY_DISABLED=1
+
 # Copy package files
 COPY package.json package-lock.json ./
 
@@ -31,6 +34,8 @@ WORKDIR /app
 
 # Set environment to production
 ENV NODE_ENV=production
+# Disable Next.js telemetry
+ENV NEXT_TELEMETRY_DISABLED=1
 
 # Create non-root user for security
 RUN addgroup --system --gid 1001 nodejs && \

README.md

@@ -131,6 +131,23 @@ The Docker container exposes port 3000 by default. You can customize the port ma
 docker run -p 8080:3000 tuxmate:latest
 ```
 
+### Environment Variables
+
+The following environment variables are configured by default:
+
+- `NODE_ENV=production` - Run in production mode
+- `PORT=3000` - Application port
+- `NEXT_TELEMETRY_DISABLED=1` - Disable Next.js anonymous telemetry
+
+You can override these when running the container:
+
+```bash
+docker run -p 3000:3000 \
+  -e PORT=3000 \
+  -e NEXT_TELEMETRY_DISABLED=1 \
+  tuxmate:latest
+```
+
 </details>
 
 

docker-compose.yml

@@ -5,13 +5,14 @@ services:
     build:
       context: .
       dockerfile: Dockerfile
-    image: tuxmate:latest
+    image: ghcr.io/retrozenith/tuxmate:latest
     container_name: tuxmate
     ports:
       - "3000:3000"
     environment:
       - NODE_ENV=production
       - PORT=3000
+      - NEXT_TELEMETRY_DISABLED=1
     restart: unless-stopped
     healthcheck:
       test: ["CMD", "wget", "--quiet", "--tries=1", "--spider", "http://localhost:3000"]