feat(docker): dockerize app with dev compose and docs

- add multi-stage Dockerfile using Next.js standalone output (node:20-alpine)
- add docker-compose.dev.yml for hot-reload development (bind mounts, npm run dev)
- add docker-compose.yml for runtime usage
- add .dockerignore to shrink build context
- docs(README): add Docker usage instructions
- fix(header): remove unused Badge import to pass ESLint
- chore(compose): drop obsolete `version` field from compose files
- build: set default NEXTAUTH_SECRET during image build to avoid NextAuth error

Author: HazarBakir

.dockerignore

@@ -0,0 +1,13 @@
+node_modules
+.next
+out
+.git
+.gitignore
+Dockerfile*
+docker-compose*.yml
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.pnpm-store
+.env*
+**/*.tsbuildinfo

Dockerfile

@@ -0,0 +1,44 @@
+# syntax=docker/dockerfile:1.7
+
+# ---------- Base ----------
+FROM node:20-alpine AS base
+ENV PNPM_HOME="/pnpm"
+ENV PATH="$PNPM_HOME:$PATH"
+RUN corepack enable
+WORKDIR /app
+
+# ---------- Deps (install with frozen lockfile) ----------
+FROM base AS deps
+RUN apk add --no-cache libc6-compat
+COPY package.json package-lock.json ./
+RUN npm ci
+
+# ---------- Build ----------
+FROM base AS build
+ENV NEXT_TELEMETRY_DISABLED=1
+# Provide a safe default so NextAuth doesn't fail during build
+ENV NEXTAUTH_SECRET=dev_docker_build_secret
+RUN apk add --no-cache libc6-compat
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+RUN npm run build
+
+# ---------- Runtime ----------
+FROM node:20-alpine AS runner
+ENV NODE_ENV=production
+WORKDIR /app
+
+# Non-root user
+RUN addgroup -S nextjs && adduser -S nextjs -G nextjs
+
+# Copy standalone server
+COPY --from=build /app/.next/standalone ./
+COPY --from=build /app/.next/static ./.next/static
+COPY --from=build /app/public ./public
+
+ENV PORT=3000
+ENV HOSTNAME=0.0.0.0
+EXPOSE 3000
+USER nextjs
+
+CMD ["node", "server.js"]

README.md

@@ -137,4 +137,33 @@ Contributions are welcome! Please open an issue or submit a pull request.
 
 ## License
 
-MIT  
+MIT  
+
+## Docker
+
+### Development (hot reload)
+```bash
+# Build and start
+docker compose -f docker-compose.dev.yml up --build
+# Then open http://localhost:3000
+```
+- Code changes on your host are reflected inside the container.
+- Uses bind mounts and `npm run dev`.
+
+### Production
+```bash
+# Build image and start
+docker compose up --build -d
+# Tail logs
+docker compose logs -f
+# Stop
+docker compose down
+```
+Set required environment variables (can be .env file in project root):
+```bash
+NEXTAUTH_URL=http://localhost:3000
+NEXTAUTH_SECRET=replace_with_secure_random
+GITHUB_CLIENT_ID=your_client_id
+GITHUB_CLIENT_SECRET=your_client_secret
+```
+The production image uses Next.js standalone output for a small runtime.  

docker-compose.dev.yml

@@ -0,0 +1,16 @@
+services:
+  web:
+    image: node:20-alpine
+    working_dir: /app
+    command: sh -c "npm ci && npm run dev"
+    ports:
+      - "3000:3000"
+    environment:
+      - NODE_ENV=development
+      - NEXT_TELEMETRY_DISABLED=1
+      - HOSTNAME=0.0.0.0
+    volumes:
+      - ./:/app
+      - /app/node_modules
+      - /app/.next
+    restart: unless-stopped

docker-compose.yml

@@ -0,0 +1,19 @@
+services:
+  web:
+    build:
+      context: .
+      dockerfile: Dockerfile
+      target: runner
+    image: githubmon:prod
+    ports:
+      - "3000:3000"
+    environment:
+      - NODE_ENV=production
+      - NEXT_TELEMETRY_DISABLED=1
+      - HOSTNAME=0.0.0.0
+      # Map your envs; you can also use an env_file
+      - NEXTAUTH_URL=${NEXTAUTH_URL}
+      - NEXTAUTH_SECRET=${NEXTAUTH_SECRET}
+      - GITHUB_CLIENT_ID=${GITHUB_CLIENT_ID}
+      - GITHUB_CLIENT_SECRET=${GITHUB_CLIENT_SECRET}
+    restart: unless-stopped

package-lock.json

@@ -1,7 +1,6 @@
 'use client'
 
 import { useRouter } from 'next/navigation'
-import { Badge } from '@/components/ui/badge'
 import { RateLimitWarning } from '@/components/common/RateLimitWarning'
 import { ThemeToggle } from '@/components/theme/ThemeToggle'
 import { useSearchStore } from '@/stores'