Fix 4 Maintainability issues in Dockerfile

[Didone]

CodeFactor found multiple issues last seen at 9ef2681:

Do not use apt-get upgrade or dist-upgrade

Dockerfile:8

Either use Wget or Curl but not both

Dockerfile:15

Avoid additional packages by specifying --no-install-recommends

Dockerfile:8

Delete the apt-get lists after installing something

Dockerfile:8