Update Docker image to use Ubuntu 20.04 not an ancient variant.
Update PHP version to 7.4 (7.0 is technically not supported by the PHP project).
Rejig the Dockerfile a little to chain some RUN commands together, to reduce the layer count (perhaps).
Better cleanup of apt files after build
Add DEBIAN_FRONTEND=noninteractive to build etc.
Types of changes
n/a
Code Preparation
[x] Check for unused code
[x] No unrelated changes are included
[x] None of the changed files are reformatting only
[x] Code is self explanatory or documented
[x] All written text is properly translated (english language) (n/a)
Summary
Update Docker image to use Ubuntu 20.04 not an ancient variant. Update PHP version to 7.4 (7.0 is technically not supported by the PHP project). Rejig the Dockerfile a little to chain some RUN commands together, to reduce the layer count (perhaps). Better cleanup of apt files after build Add DEBIAN_FRONTEND=noninteractive to build etc.
Types of changes
n/a
Code Preparation