Implemented helper role docker-central-database and refactored code

templates/docker/services/mariadb.yml.j2

@@ -1,26 +0,0 @@
-# This template needs to be included in docker-compose.yml, which depend on a mariadb database
-{% if not enable_central_database | bool %}
-  database:
-    container_name: {{application_id}}-database
-    logging:
-      driver: journald
-    image: mariadb
-    restart: {{docker_restart_policy}}
-    environment:
-      MYSQL_DATABASE: "{{database_name}}"
-      MYSQL_USER: "{{database_username}}"
-      MYSQL_PASSWORD: "{{database_password}}"
-      MYSQL_ROOT_PASSWORD: "{{database_password}}"
-      MARIADB_AUTO_UPGRADE: "1"
-    command: "--transaction-isolation=READ-COMMITTED --binlog-format=ROW"
-    volumes:
-      - database:/var/lib/mysql
-    healthcheck:
-      test: "/usr/bin/mariadb --user={{database_username}} --password={{database_password}} --execute \"SHOW DATABASES;\""
-      interval: 3s
-      timeout: 1s
-      retries: 5
-    networks:
-      - default
-{% endif %}
-{{ "\n" }}

templates/docker/services/postgres.yml.j2

@@ -1,24 +0,0 @@
-# This template needs to be included in docker-compose.yml, which depend on a postgres database
-{% if not enable_central_database | bool %}  
-  database:
-    image: postgres:{{applications.postgres.database_version}}-alpine
-    container_name: {{application_id}}-database
-    environment:
-      - POSTGRES_PASSWORD={{database_password}}
-      - POSTGRES_USER={{database_username}}
-      - POSTGRES_DB={{database_name}}
-      - POSTGRES_INITDB_ARGS=--encoding=UTF8 --locale=C
-    restart: {{docker_restart_policy}}
-    healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U {{database_name}}"]
-      interval: 10s
-      timeout: 5s
-      retries: 6
-    volumes:
-      - type:   volume
-        source: database
-        target: /var/lib/postgresql/data
-    networks:
-      - default
-{% endif %}
-{{ "\n" }}