Docker

Various information on Docker

• Docker
  • Practices
  • Commands
  • Yaml examples
    • MariaDB (MySQL Equivalent DB)

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Practices

• use a .dockerignore file to implicity include or exclude files from the docker image build

**/.dockerignore
**/.env
**/.git
**/.gitignore
**/.settings
**/.vs
**/.vscode
**/*.*proj.user
**/docker-compose*
**/compose*
**/Dockerfile*
**/node_modules
**/npm-debug.log
**/obj
**/secrets.dev.yaml
**/values.dev.yaml
README.md
/public/custom/pictures/**
**/custom.css
/scripts/**

!keep

• In VSCode, use git create tag with your version number, then git push with tag so that built docker images include tag (version) labelling.

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Commands

• Create container: docker compose up --no-start
• Docker system disk free/reclaimable: docker system df
• Delete container: docker rm container_name (must be stopped first)
• Stop and remove container(s) in a compose.yaml file: docker compose down -v [service_name]
• Inspect a container: docker inspect container_name
• List all containers: docker ps
• List containers in formatted view: docker ps -a --format "table \t\t"
• View container logs: docker logs -f container_name
• Clean all docker unused images and volumes prune='docker system prune -a --volumes (including stopped containers)
• Pull down new images, defined in a compose file: docker compose pull [container_name]
• Start a stopped container: docker start
• Start all stopped containers: docker start $(docker ps -a -q)
• Stop a container: docker stop container_name
• Stop all containers: docker stop $(docker ps -a -q)
• Create and start container(s) in a compose YAML file: docker compose up -d service_name]
• Pull a Docker image from registry: docker pull repo/imagename[:tag]

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Yaml examples

MariaDB (MySQL Equivalent DB)

services:
  mariadb:
    image: lscr.io/linuxserver/mariadb:latest
    container_name: mariadb
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Etc/UTC
      - MYSQL_ROOT_PASSWORD=rootymctooty
      - MYSQL_DATABASE=mydb
      - MYSQL_USER=petersem
      - MYSQL_PASSWORD=Xyzzy2026!
    volumes:
      - c://docker/mariadb//config:/config
    ports:
      - 3306:3306
    restart: unless-stopped

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