Docker Quick Reference

docker build -t myapp .

docker build -t myapp:1.0 -f Dockerfile.prod .

docker images

docker pull node:22-alpine

docker push user/myapp:1.0

docker tag myapp user/myapp:1.0

docker rmi myapp

docker image prune -a

docker run --name web -p 8080:80 -d nginx

docker run --rm -it ubuntu bash

docker run -e NODE_ENV=production myapp

docker run --env-file .env myapp

docker run -v "$(pwd)":/app myapp

docker ps

docker ps -a

docker stop web

docker start web

docker restart web

docker exec -it web sh

docker logs web

docker logs -f --tail 100 web

docker rm web

docker rm -f web

docker cp web:/etc/nginx/nginx.conf .

docker stats

docker volume create data

docker volume ls

docker run -v data:/var/lib/postgresql/data postgres

docker network create app-net

docker run --network app-net --name db postgres

docker system prune

docker compose up -d

docker compose up -d --build

docker compose down

docker compose down -v  # and volumes

docker compose logs -f api

docker compose exec api sh

services:
  api:
    build: .
    ports:
      - "3000:3000"
    environment:
      DATABASE_URL: postgres://db/app
    depends_on:
      - db
  db:
    image: postgres:17
    volumes:
      - db-data:/var/lib/postgresql/data
volumes:
  db-data:

FROM node:22-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci --omit=dev
COPY . .
EXPOSE 3000
CMD ["node", "server.js"]

FROM node:22 AS build
WORKDIR /app
COPY . .
RUN npm ci && npm run build

FROM nginx:alpine
COPY --from=build /app/dist /usr/share/nginx/html

# .dockerignore
node_modules
.git
.env