maggu2810

Container

Container Management and Handling

Author: Markus Rathgeb

Introduction

Generally I prefer the usage of podman rootless. As not all software already supports the rootless approach, I use podman rootless for stuff that works with and docker system daemon where this is really necessary only.

Docker

Installation

First ensure all old versions are removed

sudo dnf remove docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-selinux \
                  docker-engine-selinux \
                  docker-engine

Now let’s install docker

sudo dnf -y install dnf-plugins-core

sudo dnf config-manager \
    --add-repo \
    https://download.docker.com/linux/fedora/docker-ce.repo

sudo dnf install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

sudo systemctl enable --now docker.socket

Notes

Fedora 38

At the time of writing (2022-02-23) Fedora 38 (not yet released) is not supported. But using the Fedora 37 branch of the docker repository works.

--- /etc/yum.repos.d/docker-ce.repo.org	2023-03-01 19:57:59.964464101 +0100
+++ /etc/yum.repos.d/docker-ce.repo	2023-03-01 19:58:11.927458210 +0100
@@ -1,6 +1,6 @@
 [docker-ce-stable]
 name=Docker CE Stable - $basearch
-baseurl=https://download.docker.com/linux/fedora/$releasever/$basearch/stable
+baseurl=https://download.docker.com/linux/fedora/37/$basearch/stable
 enabled=1
 gpgcheck=1
 gpgkey=https://download.docker.com/linux/fedora/gpg

docker-compose

We do not need to install docker-compose using the package manager, pip or another approach. As it has been integrated into upstream docket by the compose plugin. Instead of docker-compose use docker compose (replace the hyphen with a space).

If there would be any need to have the “old” docker-compose available:

python3 -m venv "${HOME}/bin/pkgs/docker-compose-venv"
. "${HOME}/bin/pkgs/docker-compose-venv/bin/activate"
pip install --upgrade pip
pip install docker-compose

Uninstall

sudo systemctl disable --now docker.socket docker.service

sudo dnf remove `rpm -qa '*docker*'` containerd.io

# dnf repository-packages '*docker*' list

sudo rm -rf /etc/yum.repos.d/docker-ce.repo

# Remove all container, images, volumes, ...

podman (rootless)

Install

sudo dnf install podman podman-compose

Enable user podman socket

systemctl --user enable --now podman.socket

Notes

Mapping of UID / GID