Containerfiles

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        *--+-----------*  |
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        |  +-----------+--+
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        *--------------*

All the Containerfiles I use.

Notes:

• Pushed to ghcr.io/ GitHub image registry, EXCEPT for bootc- directories.
• bootc directories are special and are not pushed.
• Scroll down on how to run it.
• Containers can be started by using simple variables.
• You may also git clone https://github.com/cdrage/containerfiles and build it yourself (podman build -t username/container . or docker build -t username/container).

Descriptions: Below is a general overview (with instructions) on each Docker container I use. This is automatically generated from the comments that I have left in each Containerfile.## Table of Contents

• aviation-checklist
• bootc-centos-httpd
• bootc-fedora-gui
• bootc-fedora-httpd
• bootc-k3s-master-amd64
• bootc-k3s-node-amd64
• bootc-nvidia-base-centos
• cat
• gameserver
• hello
• helloworld
• hugo
• index
• jrl
• palworld
• rickroll

aviation-checklist

Description:

Used to generate aviation checklists. Based on the work by https://github.com/freerobby/aviation-checklist with the patch freerobby/aviation-checklist#2

Running:

podman run -d \
  -p 8080:80 \
  --name aviation-checklist \
  ghcr.io/cdrage/aviation-checklist

bootc-centos-httpd

Description:

IMPORTANT NOTE: This is BOOTC. This is meant for bootable container applications. See: https://github.com/containers/podman-desktop-extension-bootc

This Containerfile creates a simple httpd server on CentOS Stream 9. So you can run a web server on boot. This will be accessible on port 80.

Running:

1. Boot OS
2. Visit :80

bootc-fedora-gui

Description:

IMPORTANT NOTE: This is BOOTC. This is meant for bootable container applications. See: https://github.com/containers/podman-desktop-extension-bootc

This Containerfile is meant for testing GUI loading with the bootc extension using fedora:40. there are no users created in this image, so you will need to create a user to login from within the Containerfile using the "ARG" directive and a public SSH key. This is also very unstable..

Running:

1. Create disk image using the above extension
2. Boot OS
3. See that it is a GUI that was loaded (cinnamon desktop)
4. Login with the user and password you passed in.

bootc-fedora-httpd

Description:

IMPORTANT NOTE: This is BOOTC. This is meant for bootable container applications. See: https://github.com/containers/podman-desktop-extension-bootc

This Containerfile creates a simple httpd server on Fedora. So you can run a web server on boot. This will be accessible on port 80.

Running:

1. Boot OS
2. Visit :80

bootc-k3s-master-amd64

Description:

IMPORTANT NOTE: This is BOOTC. This is meant for bootable container applications. See: https://github.com/containers/podman-desktop-extension-bootc

This Containerfile creates a k3s master on AMD64 using CentOS Stream 9. So you can run a k8s server on boot.

In my setup, I have networking done on the ROUTER side where it will automatically assign an IP address based on the MAC. It is ideal to take note of this IP address as it will be needed for the nodes to join the cluster.

PRIVATE REGISTRY: If you want to pull from a private registry. Uncomment the "COPY auth.json /etc/ostree/auth.json" line and add your auth.json file. this auth.json file is typically found in ~/.config/containers/auth.json for podman users. Expanding your rootfs:

• If you want your OS to expand it's rootfs automatically, ENABLE THIS # RUN systemctl enable bootc-generic-growpart.service from the Containerfile.
• This is disabled by default as it can be dangerous if you are not using a VM or a disk that can be expanded.
• This is good for situations like cloud providers, usb sticks, etc.

GPU:

• Want GPU? Change the FROM to git.k8s.land/cdrage/bootc-nvidia-base-fedora / see bootc-nvidia-base-fedora folder for more details.
• GPU drivers will be built + loaded on each boot.
• This README is outside of the scope of how to use GPU with k3s, but view the k3s advanced docs for more information: https://docs.k3s.io/advanced#nvidia-container-runtime-support read it thoroughly as you WILL need nvidia-device-plugin installed and modified to ensure it has runtimeClassName set.

Notes:

• The default user is root, and the ssh key is placed in /usr/ssh/root.keys this is enabled so we can scp / ssh and get the kubeconfig file (/etc/rancher/k3s/k3s.yaml)
• k3s is loaded with NO INGRESS / Traefik as I prefer using nginx-ingress. See the systemd k3s.service file for more details.
• k3s is loaded with NO LOADBALANCER. I use metallb locally, and I have added --disable=servicelb to the systemd service file

Arguments are required in order to build this image with both your k3s K3S_TOKEN and your SSH public key. To do this, you must have the following (you can pass in this via --build-arg foo=bar on the CLI):

• HOSTNAME=k8smaster
• K3S_TOKEN=MySuperSecretK3sToken
• SSH_PUBLIC_KEY=MySSHPublicKeyNOTThePrivateKey
• K8S_VERSION=1.29.4 Running:

1. Create disk image using the above extension
2. Boot OS
3. See that it creates the k3s server on boot
4. To test the k8s server, you can retrieve the kubeconfig file from /etc/rancher/k3s/k3s.yaml from within the server (scp, ssh, etc.)
5. Then use kubectl to interact with the server COPY auth.json /etc/ostree/auth.json

bootc-k3s-node-amd64

Description:

IMPORTANT NOTE: This is BOOTC. This is meant for bootable container applications. See: https://github.com/containers/podman-desktop-extension-bootc

This Containerfile creates a k3s NODE on AMD64 using CentOS Stream 9. So you can run a k8s server on boot.

You must know the IP address of the master in order for these nodes to connect. PRIVATE REGISTRY: If you want to pull from a private registry. Uncomment the "COPY auth.json /etc/ostree/auth.json" line and add your auth.json file. this auth.json file is typically found in ~/.config/containers/auth.json for podman users. Expanding your rootfs:

• If you want your OS to expand it's rootfs automatically, ENABLE THIS # RUN systemctl enable bootc-generic-growpart.service from the Containerfile.
• This is disabled by default as it can be dangerous if you are not using a VM or a disk that can be expanded.
• This is good for situations like cloud providers, usb sticks, etc.

GPU:

• Want GPU? Change the FROM to git.k8s.land/cdrage/bootc-nvidia-base-fedora / see bootc-nvidia-base-fedora folder for more details.
• GPU drivers will be built + loaded on each boot.
• This README is outside of the scope of how to use GPU with k3s, but view the k3s advanced docs for more information: https://docs.k3s.io/advanced#nvidia-container-runtime-support read it thoroughly as you WILL need nvidia-device-plugin installed and modified to ensure it has runtimeClassName set.

Notes:

• The default user is root, and the ssh key is placed in /usr/ssh/root.keys this is enabled so we can scp / ssh and get the kubeconfig file (/etc/rancher/k3s/k3s.yaml)
• a unique hostname must be set or else it is rejected by the master k3s server for being not unique

Arguments are required in order to build this image with both your k3s token and your SSH public key. To do this, you must have the following (you can pass in this via --build-arg foo=bar on the CLI):

• HOSTNAME=k8snode1
• K3S_URL=https://k8smaster:6443
• K3S_TOKEN=MySuperSecretK3sToken
• SSH_PUBLIC_KEY=MySSHPublicKeyNOTThePrivateKey
• K8S_VERSION=1.29.4

Running:

1. Create disk image using the above extension
2. Boot OS
3. See that it creates the k3s agent on boot / connects to the k8s server
4. use kubectl get nodes and you should see your server. COPY auth.json /etc/ostree/auth.json

bootc-nvidia-base-centos

Description:

IMPORTANT NOTE: This is BOOTC. This is meant for bootable container applications. See: https://github.com/containers/podman-desktop-extension-bootc

This is a "base" container that installs the nvidia drivers and the nvidia container toolkit. This is meant to be used as a base for other containers that need GPU access.

DISABLE SECURE BOOT! You have been warned! Disable boot is KNOWN to cause issues with the nvidia drivers. ENABLE 4G DECODING in the BIOS. This is needed for certain nvidia cards to work such as the Tesla P40.

This uses Centos Stream 9 as the base image to (hopefully) be as stable as possible. Tried with Fedora 40 but found that the kernel was moving too fast for the nvidia drivers to keep up / work properly / update correctly.

IMPORTANT NOTE: On boot, this will not have the nvidia drivers loaded it they are compiled. This is because akmods are suppose to be built on boot, but this doesn't work with bootc. Instead, the nvidia drivers will recompile + use akmod + modprobe on boot.. and may take a minute to load. If you have any systemd services that require the nvidia drivers, you will need to add a After=nvidia-drivers.service to the service or have it LATE in the boot order (ex. multi-user.target) to ensure that the nvidia drivers are loaded before the service starts.

For example, if you have a podman container with --restart=always, you will need to add a After=nvidia-drivers.service to the podman-restart.service and podman-restart.timer. file. This has been done for you already within the nvidia-drivers.service and nvidia-toolkit-firstboot.service files.

Note about nvidia-toolkit-fristboot.service file: This is a one-time service on boot that will create the /etc/cdi/nvidia.yaml file. This is necessary for podman to use gpu devices.

Running:

1. In your OTHER Containerfile, change to FROM git.k8s.land/cdrage/bootc-nvidia-base-centos / this Containerfile.
2. The nvidia drivers will recompile + use akmod + modprobe on boot.
3. Use nvidia-smi command within the booted container image to see if it works.

cat

Description:

Spinning maxwell the cat

Based on https://github.com/modem7/docker-rickroll/tree/master

Running:

podman run -d \
  -p 8080:8080 \
  --name cat \
  ghcr.io/cdrage/cat

gameserver

Description:

Very simple "steam server" container checker.

Checks to see if there is a game server running on port 27015 LOCALLY (same IP as actual server) meant to be ran alongside the steam server container.

Running:

podman run -d \
   --name gameserver \
   -p 3000:3000
   ghcr.io/cdrage/gameserver

hello

Description:

Super simple hello container that showcases a logo as well as environment information that may help for diagnosing

Running:

podman run -d \
  -p 8080:8080 \
  --name helloworld \
  ghcr.io/cdrage/hello

helloworld

Description:

Super simple helloworld container that says the hostname of the container

Running:

podman run -d \
  -p 8080:8080 \
  --name helloworld \
  ghcr.io/cdrage/hello

hugo

Description: My Hugo file for hosting my personal wiki / journal / etc.

Running: podman run -d
-p 1313:1313
--name hugo
-v /path/to/hugo:/src
-v /path/to/hugo/public:/dest
ghcr.io/cdrage/hugo

index

Description:

Index page of k8s.land

Running:

podman run -d \
  -p 8080:8080 \
  --name index \
  ghcr.io/cdrage/index

jrl

Description:

Encrypted journal (for writing your life entries!, not logs!)

In my case, I enter a timestamp each time I open the file and switch to vim insert mode.

Pass in your encrypted txt file and type in your password. It'll then open it up in vim for you to edit and type up your latest entry.

Remember, this is aes-256-cbc, so it's like hammering a nail with a screwdriver: http://stackoverflow.com/questions/16056135/how-to-use-openssl-to-encrypt-decrypt-files

Public / Private key would be better, but hell, this is just a text file.

First, encrypt a text file:

openssl aes-256-cbc -a -md md5 -salt -in foobar.txt -out foobar.enc

Now run it!

Running:

podman run -it --rm \
  -v ~/txt.enc:/tmp/txt.enc \
  -v /etc/localtime:/etc/localtime:ro \
  ghcr.io/cdrage/jrl

This will ask for your password, decrypt it to a tmp folder and open it in vim. Once you :wq the file, it'll save.

palworld

Description:

Originally from: https://github.com/thijsvanloef/palworld-server-docker

Used to run the "palworld" game

Running:

podman run -d \
   --name palworld\
   -p 8211:8211 \
   -p 8221:8221 \
   -p 27015:27015 \
   -v <palworld-folder>:/palworld/ \
   -e PLAYERS=16 \
   -e PORT=8211 \
   -e MULTITHREADING=true \
   -e PUBLIC_IP="" \
   -e PUBLIC_PORT="" \
   -e COMMUNITY=true \
   -e SERVER_NAME="My Palworld Server" \
   -e SERVER_PASSWORD="supersecret" \
   -e ADMIN_PASSWORD="supersecret" \
   -e UPDATE_ON_BOOT=true \
   --restart unless-stopped \
   cdrage/palworld

rickroll

Description:

Yeah...

Based on https://github.com/modem7/docker-rickroll/tree/master

Running:

podman run -d \
  -p 8080:8080 \
  --name rickroll \
  ghcr.io/cdrage/rickroll