🐳Docker

Containers, images, compose — the daily drivers.

DevOps · 3 sections

Containers

Run with publish + env

bash

docker run -d --name db -p 5432:5432 -e POSTGRES_PASSWORD=secret postgres:16

Shell into a container

bash

docker exec -it db bash

Follow logs

bash

docker logs -f db

Stop + remove allNuclear — removes every container

bash

docker rm -f $(docker ps -aq)

Build with tag

bash

docker build -t myapp:1.0 .

Prune dangling images

bash

docker image prune -f

Save / load

bash

docker save myapp:1.0 | gzip > myapp.tar.gz
docker load < myapp.tar.gz

Minimal compose file

yaml

services:
  web:
    build: .
    ports:
      - '3000:3000'
  db:
    image: postgres:16
    environment:
      POSTGRES_PASSWORD: secret

Rebuild + restart

bash

docker compose up -d --build