Learner questions

• checking if a string exists in an array of strings in bash
• when running docker-compose I get: client version 1.38 is too new. Maximum supported API version is 1.37"
• docker compose command: Invalid interpolation format for "command" option in service
• docker-compose healthcheck does not work in a way it is expected for making container a run first and then container B
• ansible returns with "Failed to import the required Python library (Docker SDK for Python: docker (Python >= 2.7) or docker-py (Python 2.6))

Learner answers