Docker Basic Setup
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Docker Installation Steps
This section we gives fresh (Feb. 2023) references how to install Docker and Docker Compose plugin v.2.x on Ubuntu.
- Docker Docs: Install Docker Engine on Ubuntu >> Uninstall old versions >> Install using the repository
- Docker Docs: Install the Compose plugin >> Install using the repository
- LinuxServer.io Docs: As an additional Docker usage reference and source of plenty of images
Deprecated Docker Installation Steps
#Deprecated Installation Steps
Install Docker
Install Docker on Ubuntu and other Debian based distros.sudo apt install docker.io curl
sudo usermod -aG docker "$USER"
- Stack Overflow: What is docker.io in relation to docker-ce and docker-ee (now called "Mirantis Kubernetes Engine")?
- Collabora.com: The docker.io Debian package is back to life
Install Docker Compose
More information at Get started with Docker Compose.# docker-compose from github.com/docker/compose#where-to-get-docker-compose
sudo curl -L --fail \
https://github.com/docker/compose/releases/download/v2.5.0/docker-compose-linux-x86_64 \
-o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
Alternatively, for example, one can use Docker-compose provided by Linuxserver.io.
#CLI
# docker-compose from linuxserver.io
sudo curl -L --fail \
https://raw.githubusercontent.com/linuxserver/docker-docker-compose/master/run.sh \
-o /usr/local/bin/docker-compose && \
sudo chmod +x /usr/local/bin/docker-compose
Basics Example
Here is a GitHub repository that illustrates at very basic level how to use Dockerfile and docler-compose.yaml to deploy a Node.js application.
- GitHub: Simple task manager
- GitHub: Simple task manager#CLI.md
Miscellaneous
Prune All
Simple script that will prune all Docker containers and images that are not in use. If you want to use it, add the script somewhere in your $PATH to be accessible as shell command and make it executable.
sudo nano /usr/local/bin/docker-prune.sh && sudo chmod +x /usr/local/bin/docker-prune.sh
#!/bin/bash
docker image prune -a
docker container prune
docker images prune
docker system prune
docker volume rm $(docker volume ls -qf dangling=true)
Force update existing images with docker-compose
docker compose up --force-recreate --build -d
docker image prune -f
- Stack Overflow: How to update existing images with docker-compose?
Log-in to a Docker Container
docker exec -it container(id|name) /bin/bash
Generate Hashed Password for Code-server
printf 'your-password' | npx argon2-cli -e | sed 's/\$/$$/g'
- Code-server GitHub: FAQ – Can I store my password hashed?
Demo App from Nana's Docker Tutorial for Beginners
- TechWorld with Nana: Docker Tutorial for Beginners [FULL COURSE in 3 Hours] (Docker Tutorial for Beginners)
- GitLab of Nana: techworld-js-docker-demo-app
See also
