fix: remove Mercure server

.dockerignore

@@ -0,0 +1,34 @@
+**/*.log
+**/*.md
+**/*.php~
+**/*.dist.php
+**/*.dist
+**/*.cache
+**/._*
+**/.dockerignore
+**/.DS_Store
+**/.git/
+**/.gitattributes
+**/.gitignore
+**/.gitmodules
+**/compose.*.yaml
+**/compose.*.yml
+**/compose.yaml
+**/compose.yml
+**/docker-compose.*.yaml
+**/docker-compose.*.yml
+**/docker-compose.yaml
+**/docker-compose.yml
+**/Dockerfile
+**/Thumbs.db
+.github/
+docs/
+public/bundles/
+tests/
+var/
+vendor/
+.editorconfig
+.env.*.local
+.env.local
+.env.local.php
+.env.test