simplify demo app CORS setup, use S3 website instead of Web server (#47)

Makefile

@@ -1,9 +1,6 @@
-export DOCKER_BRIDGE ?= $(shell (uname -a | grep Linux > /dev/null) && echo 172.17.0.1 || echo docker.for.mac.localhost)
-export SERVICES = serverless,cloudformation,sts,stepfunctions,sqs
 export AWS_ACCESS_KEY_ID ?= test
 export AWS_SECRET_ACCESS_KEY ?= test
 export AWS_DEFAULT_REGION = us-east-1
-export START_WEB ?= 1
 
 usage:           ## Show this help
 	@fgrep -h "##" $(MAKEFILE_LIST) | fgrep -v fgrep | sed -e 's/\\$$//' | sed -e 's/##//'
@@ -18,14 +15,6 @@ deploy:          ## Deploy the app
 		echo "Deploying Serverless app to local environment"; \
 		SLS_DEBUG=1 serverless deploy --stage local
 
-start:           ## Deploy and start the app locally
-	@make deploy; make web
-
-web:             ## Start Web app in browser
-	@make install; \
-		echo "Starting Web app - open this page in your browser: http://localhost:3000"; \
-		npm run web
-
 send-request:    ## Send a test request to the deployed application
 	@echo Looking up API ID from deployed API Gateway REST APIs ...; \
 		apiId=$$(awslocal apigateway get-rest-apis | jq -r '.items[] | select(.name="local-localstack-demo") | .id'); \
@@ -38,4 +27,4 @@ lint:            ## Run code linter
 	@npm run lint
 	@flake8 demo
 
-.PHONY: usage install start lint
+.PHONY: usage install deploy send-request lint

README.md

@@ -15,7 +15,7 @@ The sample app illustrates a typical Web application scenario with asynchronous
 * Node.js / `npm`
 * `make`
 
-**Note:** Make sure to start LocalStack with the `EXTRA_CORS_ALLOWED_ORIGINS=http://localhost:3000` config enabled, to ensure the demo Web application can access the local APIs from the browser.
+Note: Please make sure to pull and start the `latest` LocalStack Docker image. At the time of writing (2023-02-01), the demo requires some features that were only recently added to LocalStack and are not part of a tagged release version yet.
 
 ## Installing
 
@@ -26,14 +26,14 @@ make install
 
 ## Running
 
-Start the application locally in LocalStack:
+To deploy and start the application locally in LocalStack:
 ```
-make start
+make deploy
 ```
 
 ## Testing
 
-After starting the app, open this URL in your browser: http://localhost:3000
+After starting the app, open this URL in your browser: http://localhost:4566/archive-bucket/index.html
 
 * Enable the option "Auto-Refresh" to continuously poll for new results
 * Click the button "Create new request" to send a new request to the backend API