Testing #7100

• open a new folder, create a new devcontainer file (e.g. Ubuntu)
• add "postCreateCommand": "echo XXX ${localEnv:PATH:NO_PATH} ${localEnv:PATH1:NO_PATH1}",
• run the container. Works

[5207 ms] Start: Run in container: /bin/sh -c echo XXX /home/aeschli/.local/bin:/home/aeschli/.... NO_PATH1
XXX /home/aeschli/.local/bin:/home/aeschli/... NO_PATH1

change localEnv to containerEnv:
"postCreateCommand": "echo XXX ${containerEnv:PATH:NO_PATH} ${containerEnv:PATH1:NO_PATH1}",

• rebuild container

[5199 ms] Start: Run in container: /bin/sh -c echo XXX ${containerEnv:PATH:NO_PATH} ${containerEnv:PATH1:NO_PATH1}
/bin/sh: 1: Bad substitution