Add test of example (#27)

Author: int128

.circleci/config.yml

@@ -6,5 +6,4 @@ jobs:
     steps:
       - checkout
       - run: apk add make
-      - run: terraform init
       - run: make check

Makefile

@@ -3,7 +3,9 @@ all: check README.md
 .PHONY: check
 check:
 	terraform fmt -check=true -diff=true
+	terraform init
 	AWS_REGION=us-east-1 terraform validate
+	make -C example check
 
 README.md: variables.tf outputs.tf
 	sed -e '/^<!--terraform-docs-->/q' $@ > $@.tmp

example/Makefile

@@ -0,0 +1,5 @@
+.PHONY: check
+check:
+	terraform fmt -check=true -diff=true
+	terraform init
+	AWS_REGION=us-east-1 terraform validate