Help with Kubernetes Pod YAML: Commands in args not executing automatically, how to do so by editing only the .yml file?

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I’m having an issue with my Kubernetes Pod YAML file. The commands specified in the args section are not executing automatically when the Pod starts. Instead, I have to manually run these commands each time, which is time-consuming and distracting. Here’s my YAML file:

apiVersion: v1
kind: Pod
metadata:
  name: my-pod
  namespace: default
spec:
  nodeSelector:
    node.kubernetes.io/instance-type: nice-gpu-machine
  containers:
  - args:
    - -c
    - |
      apt-get update -y
      apt upgrade -y
      yes | unminimize
      apt-get install -y byobu wget curl git vim nano jq unzip bzip2 tar gzip tmux htop tree net-tools man-db
      apt update -y
      apt upgrade -y
      apt install -y software-properties-common
      add-apt-repository -y ppa:deadsnakes/ppa
      apt update -y
      apt upgrade -y
      apt install -y python3.11 python3.11-venv python3.11-dev python3.11-distutils
      apt-get update -y && apt-get install -y openssh-server
      sleep infinity
    command:
    - /bin/bash
    image: my-registry/my-image:latest
    imagePullPolicy: IfNotPresent
    name: app
    resources:
      limits:
        nvidia.com/gpu: 8
        hugepages-2Mi: 5120Mi
      requests:
        memory: 8000Mi
    volumeMounts:
      - mountPath: /checkpoints
        name: checkpoints-volume
      - mountPath: /code
        name: code-volume
      - mountPath: /data
        name: data-volume
      - name: dshm
        mountPath: /dev/shm
  restartPolicy: Never
  volumes:
  - name: checkpoints-volume
    persistentVolumeClaim:
      claimName: checkpoints-pvc
  - name: code-volume
    persistentVolumeClaim:
      claimName: code-pvc
  - name: data-volume
    persistentVolumeClaim:
      claimName: data-pvc
  - name: dshm
    emptyDir:
      medium: Memory

I have two questions:

  1. Is there anything wrong with my YAML file that’s preventing the args commands from executing automatically?
  2. If the YAML file is correct, would it be better to create a new Docker image with these commands pre-installed? If so, how should I approach this?

Any help or guidance would be greatly appreciated, but solution 1 is strongly prefered as 2 is complicated afaik/way more time consuming than updating one .yml file e.g., pushing img building it and it might be huge! Thank you!

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