Docker

Docker installation on Debian

For Debian: https://docs.docker.com/engine/install/debian/

Installation

Requirements

sudo apt update
sudo apt install -y ca-certificates curl gnupg

Add repository

Debian

sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

sudo tee /etc/apt/sources.list.d/docker.sources <<EOF
Types: deb
URIs: https://download.docker.com/linux/debian
Suites: $(. /etc/os-release && echo "$VERSION_CODENAME")
Components: stable
Signed-By: /etc/apt/keyrings/docker.asc
EOF

Ubuntu

sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
  $(. /etc/os-release && echo "${UBUNTU_CODENAME:-$VERSION_CODENAME}") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update

Install docker dependencies

sudo apt update
sudo apt install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

Enable and start docker

sudo systemctl enable docker
sudo systemctl start docker

Check if docker is running

sudo systemctl status docker

Cheatsheet

Docker

• docker ps: list containers
• docker ps -a: list all containers
• docker --version: show version
• docker images: list images
• docker rm [ID]: remove container
• docker rmi [ID]: remove image
• docker run -it [IMAGE]: run image
• docker run -it --rm [IMAGE]: run image and remove it after exit
• docker run -it --rm -v [HOST_PATH]:[CONTAINER_PATH] [IMAGE]: run image and mount volume
• docker run -it --rm -v [HOST_PATH]:[CONTAINER_PATH] -p [HOST_PORT]:[CONTAINER_PORT] [IMAGE]: run image and mount volume and expose port

Docker Compose

• docker-compose up: start containers
• docker-compose up -d: start containers in background
• docker-compose down: stop containers
• docker-compose down -v: stop containers and remove volumes
• docker-compose logs: show logs
• docker-compose logs -f: show logs in real time
• docker-compose exec [SERVICE] [COMMAND]: execute command in service
• docker-compose exec [SERVICE] sh: execute shell in service
• docker-compose exec [SERVICE] bash: execute bash in service
• docker-compose exec [SERVICE] mysql -u [USER] -p: execute mysql in service

Options

Allow non-root user to run docker

with gpasswd

sudo gpasswd -a $USER docker
newgrp docker

with groupadd

sudo groupadd docker
sudo usermod -aG docker $USER

with synology

sudo synogroup --add docker
sudo chown root:docker /var/run/docker.sock
sudo synogroup --member docker $USER

After this, you may need to log out and back in, or even restart your machine before the permissions take effect.

Login to Docker Hub

sudo docker login