connectors docker: allow to change sh with bash

[erlangparasu]

Is your feature request related to a problem? Please describe

pyinfra/pyinfra/connectors/docker.py

Line 168 in 2fb4fb0

"sh",

Describe the solution you'd like

allow to change sh with bash

[simonhammes]

This is only the "outer" shell inside the container.

If you run any command (e.g. using host.run_shell_command()), the command is wrapped inside another shell (sh by default).

Example

host.run_shell_command('env')

causes this command to be executed:

docker exec -i 61b49edf82f51aab344fe6f2d5c54b24cb6bbd6c4a1862f5102cc59f16f202aa sh -c 'sh -c env'

You can use the global _shell_executable argument to modify this behavior:

host.run_shell_command('ps aux', _shell_executable='bash')

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Is this what you're looking for? Or does the container image you target not contain sh?