Allow to customize develoment postgres docker image in .env file

[submarcos]

Description

Default postres / postgis / pgrouting docker image in development can now be override in development by using POSTGRES_IMAGE=xxx in you .env file

Related Issue

Checklist

• I have followed the guidelines in our Contributing document
• My code respects the Definition of done available in the Development section of the documentation
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes
• I added an entry in the changelog file
• My commits are all using prefix convention (emoji + tag name) and references associated issues
• I added a label to the PR corresponding to the perimeter of my contribution
• The title of my PR mentionned the issue associated

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.46%. Comparing base (c6da840) to head (0300296).
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4483   +/-   ##
=======================================
  Coverage   98.46%   98.46%           
=======================================
  Files         269      269           
  Lines       21473    21473           
=======================================
  Hits        21144    21144           
  Misses        329      329           

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[cypress]

Geotrek-admin    Run #10925

Run Properties:   Passed #10925  •  a07dfa89ec ℹ️: Merge 030029647f5708d733c512334a4e8c19da9572d0 into c6da8402f7b30682407130647155...

Project	Geotrek-admin
Branch Review	refs/pull/4483/merge
Run status	Passed #10925
Run duration	02m 03s
Commit	a07dfa89ec ℹ️: Merge 030029647f5708d733c512334a4e8c19da9572d0 into c6da8402f7b30682407130647155...
Committer	Jean-Etienne Castagnede
View all properties for this run ↗︎

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Test results
Failures	0
Flaky	0
Pending	0
Skipped	0
Passing	22
View all changes introduced in this branch ↗︎