refactor(infra) : reorganize docker config into infra/dev and infra/prod

Align project structure with Lesstime: move docker/ to infra/dev/ and
deploy/ to infra/prod/. Update all references in docker-compose,
makefile, CI workflow, Dockerfile, .gitignore and .dockerignore.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

infra/dev/vhost.conf

@@ -0,0 +1,15 @@
+<VirtualHost *:80>
+    ServerName localhost
+    DocumentRoot /var/www/html/public
+
+    # API Symfony
+    <Directory /var/www/html/public>
+        Options +FollowSymLinks
+        AllowOverride All
+        Require all granted
+    </Directory>
+
+    # Logs
+    ErrorLog ${APACHE_LOG_DIR}/error.log
+    CustomLog ${APACHE_LOG_DIR}/access.log combined
+</VirtualHost>