alpine3.16 / pg15beta1 / postgis3.3.0alpha1 / improved README.md

[ImreSamu]

Changes:

• Alpine upgrade to alpine:3.16
  • upstream changes : https://github.com/docker-library/postgres/pull/962
• improved README.md
  • listing images and adding more information.
• Added new test images ( Can be changed at any time, and does not block subsequent code refactorings )
  • 14-3.3.0alpha1-alpine
  • 15beta1-3.3.0alpha1-alpine
  • 15beta1-master
• Refactored: ./update.sh script.
  • added a placeholder Dockerfile for creating alpine only images
    • IMHO: This is a nasty temporary workaround until the new jq based framework is installed
  • improved logging
  • generating markdown files for copy/pasting to the README.md
    • _dockerlists_debian.md
    • _dockerlists_alpine.md
    • _dockerlists_test.md
• latest image tag now: 14-3.2
• *-master ( test ) images has been updated
  • POSTGIS="3.3.0dev 3.3.0alpha1-94-g7c69026c8" [EXTENSION] PGSQL="140" GEOS="3.11.0beta3-CAPI-1.16.0" PROJ="9.1.0" LIBXML="2.9.10" LIBJSON="0.15" LIBPROTOBUF="1.3.3" WAGYU="0.5.0 (Internal)"

Side comments:

• 15beta1-3.2.1 is not working.

How to test:

• check out this branch
• make update
  • check the temp files: _dockerlists_*.md

[ImreSamu]

Ready for review. ( cc @phillipross )