adding FN

.ebextensions/07-custom-vpc.config

@@ -1,5 +1,5 @@
 option_settings:
   aws:ec2:vpc:
-    VPCId: "vpc-003597eb63a0a3efe"
+    VPCId: { "FN::ImportValue": "temp-vpc-ELBStrapiPublicVPC" }
     Subnets: "subnet-02cd8f7981ddfe345,subnet-02d9e1338e8d92d09,subnet-0e07d4d35394db524"
     DBSubnets: "subnet-02cd8f7981ddfe345,subnet-02d9e1338e8d92d09,subnet-0e07d4d35394db524"

todo.md

@@ -57,3 +57,31 @@ Recreate env with database, check the DB subnets - are they the same as the EC2
 Can we use cloudformation functions (imports) in .config files under option_settings? (reference a VPC that already exists?) (https://www.reddit.com/r/aws/comments/a2uoae/is_there_a_way_to_reference_an_elastic_beanstalk/) Yes?
 Yes but only certain functions: <https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/ebextensions-functions.html#ebextensions-functions-getatt>. You cannot use FN::ImportValue to reference a resource in another Cloudformation stack.
 
+Append the stackname to the outputs for the VPC and Subnets
+
+{ "Fn::ImportValue": "awseb-e-abcdefghijklmno-AutoScalingGroup" }
+
+Use join for subnets Name: !Join [ ":", [ !Ref "AWS::StackName", AccountVPC ] ]
+
+Updating 07 config to accept a parameter
+
+
+Append the stackname to the outputs for the VPC and Subnets
+
+!Sub "${AWS::StackName}-VPCID"
+
+Name: !Sub "${AWS::StackName}-ELBStrapiPublicVPC"
+Name: !Sub "${AWS::StackName}-ELBStrapiSubnet0"
+Name: !Sub "${AWS::StackName}-ELBStrapiSubnet1"
+Name: !Sub "${AWS::StackName}-ELBStrapiSubnet2"
+
+temp-vpc-ELBStrapiPublicVPC
+temp-vpc-ELBStrapiSubnet0
+temp-vpc-ELBStrapiSubnet1
+temp-vpc-ELBStrapiSubnet2
+
+{ "Fn::ImportValue": "awseb-e-abcdefghijklmno-AutoScalingGroup" }
+
+Use join for subnets   Name: !Join [ ":", [ !Ref "AWS::StackName", AccountVPC ] ]
+
+Updating 07 config to accept a parameter