Containers → Podman

• Podman → manage pods and container images
• Buildah → building/pushing/signing container images
• Skopeo → copy/inspect/delete/signing
• Runc → run & build feature to Podman and Buildah
• Crun → optional runtime for rootless containers

Podman Terms

• Images → containers can be created through images

  • converted to images
• Pods → group of containers deployed on the host

Commands

• dnf install podman

• alias docker=podman

  • create alias to use Podman instead of Docker
• podman info → check Podman registry

• podman search httpd

  • search specific repository
  • check stars for the best

Podman & Docker Commands

• podman images → check previously installed images
• podman pull docker.io/library/httpd → download and install image
• podman ps → list running containers
• podman run -dt -p 8080:80/tcp docker.io/library/httpd → run a downloaded podman container
• podman logs -l → check the logs
• podman stop <container_name|id> → stop container
• To run multiple containers, change port: 8081 and 8082
• podman stop/start <container_name|id> → stop/start container
• podman create --name httpd2 docker.io/library/httpd → create new container from downloaded image

Podman Container at Startup

• Generate a unit file:

  podman generate systemd --new --files --name httpd
  cp container-httpd.service /etc/systemd/system/
  systemctl enable container-httpd.service
  systemctl start container-httpd.service

Docker

• Install from: docs.docker.com
• systemctl start docker
• systemctl enable docker
• docker run hello-world → test if Docker is working