Makefile

export TF_VAR_aws_profile TF_VAR_aws_vpc TF_VAR_aws_net

# An implicit guard target, used by other targets to ensure
# that environment variables are set before beginning tasks
assert-%:
	@ if [ "${${*}}" = "" ] ; then               \
	    echo "Environment variable $* not set" ; \
	    exit 1 ;                                 \
	fi

vault:
	## This is the problem section here....
	@ read -p "Enter AWS Profile Name: " profile ; \
	vpc=$(shell aws --profile "$${profile}" --region us-west-2 ec2 describe-vpcs |jq -r '.[] | first | .VpcId') ; \
	net=$(shell aws --profile "$${profile}" --region us-west-2 ec2 describe-subnets --filters "Name=vpc-id,Values=$${vpc}" |jq -r '.[] | first | .SubnetId') ; \
	TF_VAR_aws_profile=$$profile TF_VAR_aws_vpc=$$vpc TF_VAR_aws_net=$$net make build && \
	TF_VAR_aws_profile=$$profile make keypair && \
	TF_VAR_aws_profile=$$profile make plan    && \
	TF_VAR_aws_profile=$$profile make apply

build: require-packer
	aws-vault exec $(TF_VAR_aws_profile) --assume-role-ttl=60m -- \
	"/usr/local/bin/packer" "build" "packer/vault.json"           \
	"-var" "builder_subnet_id=$(TF_VAR_aws_net)"                   \
	"-var" "builder_vpc_id=$(TF_VAR_aws_vpc)"

require-packer: assert-TF_VAR_aws_vpc assert-TF_VAR_aws_net
	@ echo "[info] VPC:  $(TF_VAR_aws_vpc)" ## Not set
	@ echo "[info] NET:  $(TF_VAR_aws_net)" ## Not set
packer --version &> /dev/null