fix .env files

.env.docker

@@ -54,3 +54,7 @@ MAILER_DSN=smtp://mailcatcher:1025
 ###> filename log ###
 LOG_FILE_NAME=docker
 ###< filename log ###
+
+### Internal requests (@see doc/internal_requests.md)
+INTERNAL_FILES_DOWNLOAD_URI=https://nginx/_internal/secure/files
+###

.env.staging

@@ -46,3 +46,7 @@ MERCURE_PUBLIC_URL=https://none
 # The secret used to sign the JWTs
 MERCURE_JWT_SECRET=gEwnJpcR8k0xE2sfBpEJzzuP2b2TXhZnzImIqCUk3j4RStBZa2pQjbEMsnGE4iGM
 ###< symfony/mercure-bundle ###
+
+### Internal requests (@see doc/internal_requests.md)
+INTERNAL_FILES_DOWNLOAD_URI=https://none
+###

.env.test

@@ -1,5 +1,5 @@
 ###> symfony/framework-bundle ###
-APP_DEBUG=0
+APP_DEBUG=1
 ###< symfony/framework-bundle ###
 
 ###> doctrine/doctrine-bundle ###
@@ -55,3 +55,7 @@ WKHTMLTOIMAGE_PATH=/usr/bin/wkhtmltoimage
 ###> filename log ###
 LOG_FILE_NAME=test
 ###< filename log ###
+
+### Internal requests (@see doc/internal_requests.md)
+INTERNAL_FILES_DOWNLOAD_URI=https://api.test1.opentalent.fr/_internal/secure/files
+###