try fix gitlabCI 4

Status Job ID Name Coverage
  Build
failed #34
build

00:00:21

 
  Deploy
skipped #35
deploy
 
Name Stage Failure
failed
build Build
Usage: mkdocs [OPTIONS] COMMAND [ARGS]...
Try "mkdocs -h" for help.

Error: No such command "sh".
Usage: mkdocs [OPTIONS] COMMAND [ARGS]...
Try "mkdocs -h" for help.

Error: No such command "sh".
ERROR: Job failed: exit code 2