Allow using --no-cluster without --no-network when --launch-type=FARGATE is used

Author: DarthSim

README.md

@@ -140,7 +140,10 @@ If you don't want the template to include the ECS cluster, use the `--no-cluster
 ```
 
 > [!IMPORTANT]
-> Since the ECS cluster's default capacity provider may be configured to use existing networking resources such as VPC, subnetworks, and security groups, the `--no-cluster` option requires the `--no-network` option to be used as well.
+> Since the Fargate and EC2 launch types require ECS services to be configured differently, make sure to use the `--launch-type` option corresponding to your ECS cluster's default capacity provider launch type.
+
+> [!IMPORTANT]
+> When the `--no-cluster` and `--launch-type=EC2` options are used together, the `--no-network` option is required.
 
 See the script's help (`./template.py -h`) for more options.
 

template.py

@@ -53,8 +53,8 @@
 
 args = cli_parser.parse_args()
 
-if args.no_cluster and not args.no_network:
-  cli_parser.error("--no-cluster can be used only with --no-network")
+if args.no_cluster and args.launch_type == "EC2" and not args.no_network:
+  cli_parser.error("--no-cluster combined with --launch-type EC2 requires --no-network")
 
 template = Template()
 template.set_version("2010-09-09")