ajout des informations d'un user pg dans une variable d'env

Gemfile.lock

     marcel (1.0.1)
     method_source (1.0.0)
     mini_mime (1.0.3)
+    mini_portile2 (2.5.3)
     minitest (5.14.4)
     msgpack (1.4.2)
     nio4r (2.5.7)
+    nokogiri (1.11.3)
+      mini_portile2 (~> 2.5.0)
+      racc (~> 1.4)
     nokogiri (1.11.3-x86_64-linux)
       racc (~> 1.4)
     pg (1.2.3)
     zeitwerk (2.4.2)
 
 PLATFORMS
+  armv7l-linux-eabihf
   x86_64-linux
 
 DEPENDENCIES

config/database.yml

   adapter: postgresql
   pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
   timeout: 5000
-  username: lou
+  username: <%= ENV['PG_USER'] %>
+  password: <%= ENV['PG_USER_PWD'] %>
 
 development:
   <<: *default
 production:
   <<: *default
   # database: db/production.sqlite3
-  database: registra_production
+  database: registra_production