Docker image should include the git binary for vendir

[petewall]

I'm trying to use vendir from the docker image with this config file:

---
apiVersion: vendir.k14s.io/v1alpha1
kind: Config
directories:
  - path: alloyModules
    contents:
      - path: .
        git:
          url: https://github.com/grafana/alloy-modules
          ref: origin/main

But, it fails because git is not in the container image:

docker run --rm --volume "$(pwd):/src" --workdir /src ghcr.io/carvel-dev/docker-image:latest vendir sync -l
apiVersion: vendir.k14s.io/v1alpha1
directories:
- contents:
  - git:
      ref: efc635083892036dd0cf2dad76a26d9ff716858f
      url: https://github.com/grafana/alloy-modules
    path: .
  path: alloyModules
kind: Config
minimumRequiredVersion: ""

vendir: Error: Syncing directory 'alloyModules':
  Syncing directory '.' with git contents:
    Fetching git repository:
      Git [init]: exec: "git": executable file not found in $PATH (stderr: )
make: *** [alloyModules/LICENSE] Error 1

[petewall]

Adding git from inside the binary does make things work:

% docker run -it --rm -v $(pwd):/src --workdir /src ghcr.io/carvel-dev/docker-image:latest bash
WARNING: The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested k8s-monitoring-test/                  
root@450d01c0e025:/src# vendir sync -l;
Config with locks

apiVersion: vendir.k14s.io/v1alpha1
directories:
- contents:
  - git:
      ref: efc635083892036dd0cf2dad76a26d9ff716858f
      url: https://github.com/grafana/alloy-modules
    path: .
  path: alloyModules
kind: Config
minimumRequiredVersion: ""

Fetching: alloyModules + . (git from https://github.com/grafana/alloy-modules@efc635083892036dd0cf2dad76a26d9ff716858f)

  --> git init

vendir: Error: Syncing directory 'alloyModules':
  Syncing directory '.' with git contents:
    Fetching git repository:
      Git [init]: exec: "git": executable file not found in $PATH (stderr: )
root@450d01c0e025:/src# vendir sync -l 
Config with locks

apiVersion: vendir.k14s.io/v1alpha1
directories:
- contents:
  - git:
      ref: efc635083892036dd0cf2dad76a26d9ff716858f
      url: https://github.com/grafana/alloy-modules
    path: .
  path: alloyModules
kind: Config
minimumRequiredVersion: ""

Fetching: alloyModules + . (git from https://github.com/grafana/alloy-modules@efc635083892036dd0cf2dad76a26d9ff716858f)

  --> git init

vendir: Error: Syncing directory 'alloyModules':
  Syncing directory '.' with git contents:
    Fetching git repository:
      Git [init]: exec: "git": executable file not found in $PATH (stderr: )
root@450d01c0e025:/src# apt-get update && apt-get install git
...
After this operation, 39.3 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
...
root@450d01c0e025:/src# vendir sync -l 
...
Succeeded
root@450d01c0e025:/src#