simpifly Dockerfiles

[johnroyer]

some updates:

• Remove deprecated syntax
• use mlocati/docker-php-extension-installer to install PHP extensions: easier to read and install dependencies automatically
• use multiple docker images: docker image layers are re-usable, it can accelerate build speed while working on Dockerfile

Notes: everything should be works on docker compose up

[ssddanbrown]

Thanks for offering this @johnroyer but I personally prefer the original means of installing extensions and composer to be honest, rather than getting another container and external script involved.

[johnroyer]

How do you think if I revert the commit of php extension installer ?

[ssddanbrown]

Assuming that reverts both composer and extension install changes, then yeah should be good.
Just an FYI, I'll probably squash merge this rather than having (potentially) 7 commits for altering a single file.

[johnroyer]

Assuming that reverts both composer and extension install changes

OK, i will revert both

I will rebase onto develop before push.

[johnroyer]

I merge changes to 2 commits. Seems everything is fine on build.

[ssddanbrown]

Thanks @johnroyer, now merged.
While testing, I followed this up with 227c5e1 to address some other issues (unrelated to this PR).

[johnroyer]

Thanks for the update