DL3048 style: Invalid label key.

DL3008 warning: Pin versions in apt get install. Instead of `apt-get install <package>` use `apt-get install <package>=<version>`

DL3009 info: Delete the apt-get lists after installing something

SC2028 info: echo may not expand escape sequences. Use printf.

DL3015 info: Avoid additional packages by specifying `--no-install-recommends`

DL3008 warning: Pin versions in apt get install. Instead of `apt-get install <package>` use `apt-get install <package>=<version>`

DL3009 info: Delete the apt-get lists after installing something

DL3008 warning: Pin versions in apt get install. Instead of `apt-get install <package>` use `apt-get install <package>=<version>`

DL3015 info: Avoid additional packages by specifying `--no-install-recommends`