Stray curly braces moved to correct place. Noticed in propeadeutic.

.devcontainer/devcontainer.json

@@ -69,7 +69,7 @@
 	},
 
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
-	"forwardPorts": [ 5001 ],
+	// "forwardPorts": [ 5001 ],
 
 	// Uncomment the next line if you want start specific services in your Docker Compose config.
 	// "runServices": [],
@@ -90,5 +90,6 @@
 		// "terraform": "latest",
 		"azure-cli": {
 			"version": "lts"
+		}
 	}
 }

Dockerfile

@@ -31,7 +31,7 @@ ENV FLASK_RUN_PORT=${FLASK_RUN_PORT}
 ## Run Flask app when container started, and listen all the interfaces
 ## Note: CMD doesn't run command in build, but defines an starting command
 ## when container is started (or arguments for ENTRYPOINT).
-CMD flask run --host=0.0.0.0 # --port=${FLASK_RUN_PORT} --app=${FLASK_APP}}
+CMD flask run --host=0.0.0.0 # --port=${FLASK_RUN_PORT} --app=${FLASK_APP}
 
 ## Examples for other commands:
 ## Run nothing, so that the container can be used as a base image