DL3048 style: Invalid label key.

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

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

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>`

DL3047 info: Avoid use of wget without progress bar. Use `wget --progress=dot:giga <url>`. Or consider using `-q` or `-nv` (shorthands for `--quiet` or `--no-verbose`).

DL3003 warning: Use WORKDIR to switch to a directory

SC2046 warning: Quote this to prevent word splitting.