Refactor E2E tests and configuration format

- Replaced `easymapping` configuration with `containers` for better maintainability and clarity.
- Introduced `DockerComposeFixture` class in `utils.py` to manage Docker Compose lifecycle and smart build strategy.
- Enhanced YAML-to-environment variable conversion in `ContainerEnv` for dynamic configuration support.
- Updated HAProxy configurations and test fixtures to reflect the new format.
- Improved test coverage for YAML parsing, environment variable handling, and HAProxy config generation.

tests_e2e/static/conf/config-deny-pages.yml

@@ -33,46 +33,39 @@ plugins:
         - /config
       status_code: 404  # Hide existence of these paths
 
-easymapping:
-  - port: 80
-    hosts:
-      # Domain 1: Uses global deny_pages configuration
-      host1.local:
-        containers:
-          - webapp1:8080
-        # No plugins specified = uses global configuration
+containers:
+  # Domain 1: Uses global deny_pages configuration
+  "host1.local:80":
+    ip: ["webapp1:8080"]
+    # No plugins specified = uses global configuration
 
-      # Domain 2: WordPress site with custom blocked paths
-      host2.local:
-        containers:
-          - wordpress:80
-        # Override global plugin configuration for this domain
-        plugins:
-          - deny_pages
-        plugin_config:
-          deny_pages:
-            paths:
-              - /wp-admin
-              - /wp-login.php
-              - /xmlrpc.php
-              - /wp-config.php
-            status_code: 403  # Return forbidden instead of 404
+  # Domain 2: WordPress site with custom blocked paths
+  "host2.local:80":
+    ip: ["wordpress:80"]
+    # Override global plugin configuration for this domain
+    plugins: [deny_pages]
+    plugin:
+      deny_pages:
+        paths:
+          - /wp-admin
+          - /wp-login.php
+          - /xmlrpc.php
+          - /wp-config.php
+        status_code: 403  # Return forbidden instead of 404
 
-      # Domain 3: Public site with stricter blocking
-      host3.local:
-        containers:
-          - publicsite:3000
-        plugins:
-          - deny_pages
-        plugin_config:
-          deny_pages:
-            paths:
-              - /admin
-              - /administrator
-              - /manager
-              - /phpmyadmin
-              - /.git
-              - /.env
-              - /config
-              - /backup
-            status_code: 404
+  # Domain 3: Public site with stricter blocking
+  "host3.local:80":
+    ip: ["publicsite:3000"]
+    plugins: [deny_pages]
+    plugin:
+      deny_pages:
+        paths:
+          - /admin
+          - /administrator
+          - /manager
+          - /phpmyadmin
+          - /.git
+          - /.env
+          - /config
+          - /backup
+        status_code: 404