Updated docker compose file and README

[mentallyinspired]

Updates

• Docker compose file update:
  • Environment variables moved to and replaced by env_file
  • Fixed warning from MySQL container
• README file was updated to reflect changes in the docker compose and to remove duplicate information regarding getting started with docker run.

Moving environment variables to env_file

Current users of the docker compose file need to move their environment variables from the docker-compose.yml file to the .env file before doing docker compose up -d.

This move of environment variables should give the user more flexibility and control regarding setting up and changing the configuration. The docker-compose.yml file will also be less cluttered, while the user gets all possible environment variables in the env_file.

More info on "Fixed warning from MySQL container"

--character-set-server: 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.
--collation-server: 'utf8mb3_unicode_ci' is a collation of the deprecated character set UTF8MB3. Please consider using UTF8MB4 with an appropriate collation instead.

This was fixed by replacing command: --character-set-server=utf8--collation-server=utf8_unicode_ci with command: --character-set-server=UTF8MB4 --collation-server=UTF8MB4_unicode_ci This will not affect current running instances.

Testing of the changes

All changes have been tested on a new setup and on a current running setup.

• Test on new setup consist of following the updated instructions in the README file
• Test on current setup involved using the new docker-compose.yml file and moving any current environment variables to the env_file

[CLAassistant]

All committers have signed the CLA.