feat: add build job

- add build job that runs `make plan`
- add deploy job that runs `make apply`
- ensure make-plan also runs init target
- enable provider caching
- enable creating client.crt/client.key
- trap EXIT to cleanup temp directory

Makefile

@@ -11,7 +11,15 @@ define vault_env
 	export PUPPET_CERT_PUB=$$(vault kv get -field=public_key kv/service/puppet/certificates/terraform) && \
 	export PUPPET_CERT_PRIV=$$(vault kv get -field=private_key kv/service/puppet/certificates/terraform) && \
 	export TG_QUEUE_EXCLUDE_DIR="templates/base" && \
-	export $$(vault read -format=json kv/data/service/terraform/incus | jq -r '.data.data | to_entries[] | "\(.key)=\(.value)"')
+	export TG_PROVIDER_CACHE=1 && \
+	export TG_TF_PATH=terraform && \
+	eval "$$(vault read -format=json kv/data/service/terraform/incus \
+	  | jq -r '.data.data | to_entries[] | "export \(.key)=\(.value|@sh)"')" && \
+	export INCUS_CONF=$$(mktemp -d) && \
+	trap "rm -rf $$INCUS_CONF" EXIT && \
+	mkdir -p $$INCUS_CONF && \
+	printf '%s\n' "$$INCUS_CLIENT_CRT" > $$INCUS_CONF/client.crt && \
+	printf '%s\n' "$$INCUS_CLIENT_KEY" > $$INCUS_CONF/client.key
 endef
 
 clean:
@@ -29,7 +37,7 @@ plan: init
 	@$(call vault_env) && \
 	terragrunt run --all --parallelism 8 --non-interactive plan
 
-apply:
+apply: init
 	@$(call vault_env) && \
 	terragrunt run --all --parallelism 5 --non-interactive apply