feat: add MongoDB and Mongo Express services to docker-compose configuration

docker-compose/mongodb/docker-compose.yml

@@ -0,0 +1,44 @@
+# Use root/example as user/password credentials
+version: '3.1'
+services:
+  mongo-db:
+    image: mongo
+    container_name: mongo-db
+    restart: always
+    environment:
+      UID: 1000
+      GID: 1006
+      MONGO_INITDB_ROOT_USERNAME: yourusername
+      MONGO_INITDB_ROOT_PASSWORD: ChangeMe123!
+    volumes:
+      - /docker-containers/mongodb/db:/data/db
+      - /docker-containers/mongodb/configdb:/data/configdb
+      - /docker-containers/mongodb/backup:/data/sickbackup
+    stdin_open: true
+    tty: true
+    networks:
+      homelab:    # Specifying the network to join, simple way
+        aliases:
+          - mongo  # how to add multiple aliases
+          - mongo-db
+          - mongodb
+
+  mongo-express:
+    image: mongo-express
+    restart: always
+    ports:
+      - 8081:8081
+    environment:
+      ME_CONFIG_MONGODB_ADMINUSERNAME: yourusername
+      ME_CONFIG_MONGODB_ADMINPASSWORD: ChangeMe123!
+      ME_CONFIG_MONGODB_URL: mongodb://yourusername:ChangeMe123!@mongo:27017/
+      ME_CONFIG_BASICAUTH_USERNAME: yourusername
+      ME_CONFIG_BASICAUTH_PASSWORD: ChangeMe123
+    networks:
+      - homelab    # Specifying the network to join, simple way
+
+networks:    # I don't know why but you have to specify the network 2x. In service, and in this tag area..
+#  some-network:
+  homelab:            # Sub-section, any network name or 'default' to edit default one created
+#    name: homelab      # Networks can also be given a custom name, not needed if existing
+    external: true      # This option causes compose to join the above network instead of making a _default one