add instructions

examples/dummy-vpc/vpc0/README.md

@@ -2,7 +2,7 @@
 
 This VPC is created when a Route53 Private Hosted Zone PHZ is needed in an account which uses shared subnets from a central account.
 
-A [support case(https://us-gov-west-1.console.amazonaws-us-gov.com/support/home?region=us-gov-west-1#/case/?displayId=13210918551&language=en) was opened with AWS
+A [support case](https://us-gov-west-1.console.amazonaws-us-gov.com/support/home?region=us-gov-west-1#/case/?displayId=13210918551&language=en) was opened with AWS
 in account `258852445129-ma50-gov`. 
 
 Initial problem:
@@ -118,3 +118,38 @@ The process will work something like this:
 3. authorize the shared VPC in account B with the PHZ in account A (credentials for account B)
 4. associate the shared VPC in account B with the PHZ in account A
 5. delete the dummy VPC in account A
+
+# Execution
+
+To create the dummy VPC, you will do this in the region desired, copy this code, and execute it.  Please note you must get this from the `tf-upgrade` branch.
+
+```script
+cd PATH-TO-TERRAFORM-MODULES
+git clone git@github.e.it.census.gov:terraform-modules/aws-vpc-setup.git -b tf-upgrade
+```
+
+If you already have this repo, checkout and update the branch.
+
+```script
+cd PATH-TO-TERRAFORM-MODULES
+cd aws-vpc-setup
+git checkout tf-upgrade
+git pull origin tf-upgrade
+```
+
+Next go to your vpc and region where you desire to create the dummy VPC.
+
+```script
+cd PATH-TO-TARGET-ACCOUNT
+cd vpc/{region}
+git checkout -b create-dummy-vpc
+rsync -avRWH PATH-TO-TERRAFORM-MODULES/aws-vpc-setup/examples/dummy-vpc/./vpc0 ./
+cd vpc0
+tf-run apply
+
+# add, commit, and PR
+git add .
+git commit -m'add dummy vpc0'
+git push
+# add run.apply*log to PR, create PR
+```