remove docker compose file's useless field tags.

example/cluster-hostname.yaml

@@ -52,8 +52,6 @@ services:
     build:
       context: .
       dockerfile: ./image/mysql/5.7/Dockerfile
-      tags:
-        - "example/mysql:5.7"
     image: example/mysql:5.7
     env_file:
       - ../env/mysql.env

example/cluster-ip.yaml

@@ -58,8 +58,6 @@ services:
     build:
       context: .
       dockerfile: ./image/mysql/5.7/Dockerfile
-      tags:
-        - "example/mysql:5.7"
     image: example/mysql:5.7
     networks:
       nacos_net:

example/custom-application-config.yaml

@@ -21,8 +21,6 @@ services:
     build:
       context: .
       dockerfile: ./image/mysql/5.7/Dockerfile
-      tags:
-        - "example/mysql:5.7"
     image: example/mysql:5.7
     env_file:
       - ../env/mysql.env

example/standalone-mysql-5.7.yaml

@@ -22,8 +22,6 @@ services:
     build:
       context: .
       dockerfile: ./image/mysql/5.7/Dockerfile
-      tags:
-        - "example/mysql:5.7"
     image: example/mysql:5.7
     env_file:
       - ../env/mysql.env

example/standalone-mysql-8.yaml

@@ -20,8 +20,6 @@ services:
     build:
       context: .
       dockerfile: ./image/mysql/8/Dockerfile
-      tags:
-        - "example/mysql:8.0.30"
     image: example/mysql:8.0.30
     env_file:
       - ../env/mysql.env