example_configs: Add Metabase and sonarqube (#906)

example_configs/sonarqube.md

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+# Configuring LDAP in SonarQube
+
+[SonarQube](https://github.com/SonarSource/sonarqube)
+
+Continuous Inspection
+
+---
+
+SonarQube can configure ldap through environment variables when deploying using docker-compose
+
+## docker-compose.yaml
+
+```yaml
+version: "3"
+
+services:
+  sonarqube:
+    image: sonarqube:community
+    depends_on:
+      - db
+    environment:
+      SONAR_JDBC_URL: jdbc:postgresql://db:5432/sonar
+      SONAR_JDBC_USERNAME: sonar
+      SONAR_JDBC_PASSWORD: sonar
+      LDAP_URL: ldap://example.com:3890
+      LDAP_BINDDN: cn=admin,ou=people,dc=example,dc=com
+      LDAP_BINDPASSWORD: passwd
+      LDAP_AUTHENTICATION: simple
+      LDAP_USER_BASEDN: ou=people,dc=example,dc=com
+      LDAP_USER_REQUEST: (&(objectClass=inetOrgPerson)(uid={login})(memberof=cn=sonarqube_users,ou=groups,dc=example,dc=com))
+      LDAP_USER_REALNAMEATTRIBUTE: cn
+      LDAP_USER_EMAILATTRIBUTE: mail
+    volumes:
+      - sonarqube_data:/opt/sonarqube/data
+      - sonarqube_extensions:/opt/sonarqube/extensions
+      - sonarqube_logs:/opt/sonarqube/logs
+    ports:
+      - "9000:9000"
+  db:
+    image: postgres:12
+    environment:
+      POSTGRES_USER: sonar
+      POSTGRES_PASSWORD: sonar
+    volumes:
+      - postgresql:/var/lib/postgresql
+      - postgresql_data:/var/lib/postgresql/data
+
+volumes:
+  sonarqube_data:
+  sonarqube_extensions:
+  sonarqube_logs:
+  postgresql:
+  postgresql_data:
+```
+
+> [SonarQube docker-compose.yaml example](https://docs.sonarsource.com/sonarqube/latest/setup-and-upgrade/install-the-server/installing-sonarqube-from-docker/)
+