Broken cloud init if ENV contains double quote

[dbalabka]

Describe the issue:

Scheduler will be shutdown by guest OS if any ENVs contain "

Minimal Complete Verifiable Example:

GCPCluster(
        env_vars={"ANY_VAR": '"'} 
    )

The cloud init will contains:

...
# Run container:
 - 'docker run ...  -e GCP_ANY_VAR=""" ...'
...

while it should escape " propely:

...
# Run container:
 - 'docker run ...  -e GCP_ANY_VAR="\"" ...'
...

To fix the problem we have to:

1. Properly refactor the command rendering in cloud-init:
   

   dask-cloudprovider/dask_cloudprovider/generic/cloud-init.yaml.j2

   Line 59 in 736842d

   - 'docker run --net=host {%+ if gpu_instance %}--gpus=all{% endif %} {% for key in env_vars %} -e {{key}}="{{env_vars[key]}}" {% endfor %}{%+ if docker_args %}{{docker_args}}{% endif %} {{image}} {{ command }}'

2. There should be proper error logging to show that cloud init does not pass

Environment:

• Dask version: 2024.12.1
• Python version: 3.11
• Operating System: WSL
• Install method (conda, pip, source): poetry

[dbalabka]

Wrong repostiory. Please move to https://github.com/dask/dask-cloudprovider/