Rewrite build-targets to build multiple images from repo

Signed-off-by: Knut Ahlers <knut@ahlers.me>

Makefile

@@ -8,10 +8,8 @@ YQ := ./yq_$(YQ_VERSION)
 
 default:
 
-config.json: $(YQ)
-	$(YQ) -ojson . config.yaml | jq -S . >config.json
-
-create-snapshot: config.json $(ENVRUN) $(PACKER)
+build/%.yaml: $(ENVRUN) $(PACKER) $(YQ)
+	$(YQ) -ojson . $*.yaml | jq -S . >config.json
 	$(PACKER) init alpine.pkr.hcl
 	$(ENVRUN) -- $(PACKER) build -var-file=config.json alpine.pkr.hcl
 

README.md

@@ -7,4 +7,4 @@ It contains a modified version of the packer / ansible setup to create a snapsho
 ## Usage
 
 - Create an `.env` file containing an `HCLOUD_TOKEN=someimportanttoken`
-- Execute `make create-snapshot`
+- Execute `make build/<your YAML config, i.e. config.yaml>`