Update makefile with prod infrastructure commands

# Subject
Add two new prod infrastructure makefile commands

# Why these changes are being introduced:
These changes are needed to include makefile commands for prod infrastructure to promote the stage image from stage to prod, and run the prod infrastructure.

# How this addresses that need:
Add the two commands, which are pretty much copy/paste from mario, and copy/paste from the output of the infrastructure deploy

# Side effects of this change:
None

# Relevant ticket(s):
https://mitlibraries.atlassian.net/browse/ETD-520

# Resolves: #123 (GH issue)
NA

Makefile

@@ -24,9 +24,20 @@ publish: dist ## Build, tag and push
 	docker push $(ECR_REGISTRY)/dspacesubmissionservice-stage:latest
 	docker push $(ECR_REGISTRY)/dspacesubmissionservice-stage:`git describe --always`
 
+promote: ## Promote the current staging build to production
+	docker login -u AWS -p $$(aws ecr get-login-password --region us-east-1) $(ECR_REGISTRY)
+	docker pull $(ECR_REGISTRY)/dspacesubmissionservice-stage:latest
+	docker tag $(ECR_REGISTRY)/dspacesubmissionservice-stage:latest $(ECR_REGISTRY)/dspacesubmissionservice-prod:latest
+	docker tag $(ECR_REGISTRY)/dspacesubmissionservice-stage:latest $(ECR_REGISTRY)/dspacesubmissionservice-prod:$(DATETIME)
+	docker push $(ECR_REGISTRY)/dspacesubmissionservice-prod:latest
+	docker push $(ECR_REGISTRY)/dspacesubmissionservice-prod:$(DATETIME)
+
 run-stage:  ## Runs the task in stage - see readme for more info
 	aws ecs run-task --cluster dspacesubmissionservice-stage --task-definition dspacesubmissionservice-stage --network-configuration "awsvpcConfiguration={subnets=[subnet-0744a5c9beeb49a20],securityGroups=[sg-06b90b77a06e5870a],assignPublicIp=DISABLED}" --launch-type FARGATE --region us-east-1
 
+run-prod: ##Runs the task in prod - see readme for more info
+	aws ecs run-task --cluster dspacesubmissionservice-prod --task-definition dspacesubmissionservice-prod --network-configuration "awsvpcConfiguration={subnets=[subnet-0744a5c9beeb49a20],securityGroups=[sg-0b29d571e70c05101],assignPublicIp=DISABLED}" --launch-type FARGATE --region us-east-1
+
 lint: bandit black flake8 isort ## Runs all linters
 
 bandit: ## Security oriented static analyser for python code