Ubuntu에 docker와 docker-compose v2 설치하기

참고: docker-compose v1은 docker-compose up -d과 같이 실행하지만 v2는 -를 안 해도 된다. 즉 docker compose up -d로 설치한다.

설치

Install Docker’s official GPG key.

$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker.gpg

Run the following command to add the Docker repository.

$ echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

Update the system to include Docker’s repository.

$ sudo apt update

Install Docker and the Docker compose plugin.

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

This will be using the Docker Compose v2 plugin instead of the older legacy binary. Therefore, the command for running it has changed from docker-compose to docker composeand this is reflected here.
Docker runs with elevated privileges so you will need to use sudo frequently to run commands. The better option is to add your Linux user account to the docker user group.

$ sudo usermod -aG docker ${USER}

The ${USER} variable picks up the currently logged-in system account. If you are not logged in with the user you want to give privileges to, replace ${USER} with the username.
To apply for the new group membership, log out of the server and back in, or use the following command. You will be prompted for the user’s password.

$ su - ${USER}