Support for ${env:HOME} not working

[bryceschober]

I feel like I have the same issue as #1094, on version 1.1.0. My docker run task looks like:

        {
            "label": "Run JupyterLab",
            "type": "docker-run",
            "dockerRun": {
                "image": "jupyter/datascience-notebook:latest",
                "command": "start-notebook.sh'",
                "env": {
                    "RESTARTABLE": "yes",
                    "JUPYTER_ENABLE_LAB": "yes"
                },
                "ports": [{
                    "hostPort": 8888, 
                    "containerPort": 8888
                }],
                "volumes": [{
                    "localPath": "${env:HOME}",
                    "containerPath": "/home/jovyan/work",
                    "permissions": "rw"
                }]
            }
        }

I get the same terminal error:

/bin/sh: 1: Bad substitution

The resulting command generated by VS Code is (obviously without the line-wrapping for convenience):

docker run -dt -e "RESTARTABLE=yes" -e "JUPYTER_ENABLE_LAB=yes" \
  --label "com.microsoft.created-by=visual-studio-code" \
  -v "${env:HOME}:/home/jovyan/work:rw" \
  -p "8888:8888" "jupyter/datascience-notebook:latest" start-notebook.sh

Note the unexpanded ${env:HOME}. If I fix that by replacing it with $HOME on a VS Code terminal and run it manually, it launches the docker container as expected.

[bwateratmsft]

This is primarily due to #1413 which is blocked by microsoft/vscode#81007. We had to implement a custom variable resolver because CustomExecution offered no way to resolve using the built-in resolver, and our implementation didn't include support for ${env:...}. @bryceschober can you chime in on the VSCode issue to voice support? 😄