/docker-centos

Docker Image Packaging for CentOS

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Docker Image Packaging for CentOS

AlviStack

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CentOS (from Community Enterprise Operating System) was a Linux distribution that provided a free, community-supported computing platform functionally compatible with its upstream source, Red Hat Enterprise Linux (RHEL). In January 2014, CentOS announced the official joining with Red Hat while staying independent from RHEL, under a new CentOS governing board.

Learn more about CentOS: https://centos.org/

Supported Tags and Respective Packer Template Links

Overview

This Docker container makes it easy to get an instance of SSHD up and running with CentOS.

Based on Official CentOS Docker Image with some minor hack:

  • Packaging by Packer Docker builder and Ansible provisioner in single layer
  • Handle ENTRYPOINT with catatonit
  • Handle CMD with SSHD

Quick Start

Start SSHD:

# Pull latest image
docker pull alvistack/centos-8-stream

# Run as detach
docker run \
    -itd \
    --name centos \
    --publish 2222:22 \
    alvistack/centos-8-stream

Success. SSHD is now available on port 2222.

Because this container DIDN'T handle the generation of root password, so you should set it up manually with pwgen by:

# Generate password with pwgen
PASSWORD=$(docker exec -i centos pwgen -cnyB1); echo $PASSWORD

# Inject the generated password
echo "root:$PASSWORD" | docker exec -i centos chpasswd

Alternatively, you could inject your own SSH public key into container's authorized_keys by:

# Inject your own SSH public key
(docker exec -i centos sh -c "cat >> /root/.ssh/authorized_keys") < ~/.ssh/id_rsa.pub

Now you could SSH to it as normal:

ssh root@localhost -p 2222

Versioning

YYYYMMDD.Y.Z

Release tags could be find from GitHub Release of this repository. Thus using these tags will ensure you are running the most up to date stable version of this image.

YYYYMMDD.0.0

Version tags ended with .0.0 are rolling release rebuild by GitLab pipeline in weekly basis. Thus using these tags will ensure you are running the latest packages provided by the base image project.

License

Author Information