fix lint errors, enable CI

Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>

Makefile

@@ -1,3 +1,19 @@
+.PHONY: all
+all: dagger
+
+.PHONY: generate
+generate:
+	go generate ./dagger
+
 .PHONY: dagger
-dagger:
-	go generate ./dagger && go build -o ./cmd/dagger/ ./cmd/dagger/
+dagger: generate
+	go build -o ./cmd/dagger/ ./cmd/dagger/
+
+.PHONY: cuefmt
+cuefmt:
+	(cd ./dagger && cue fmt -s ./... && cue trim -s ./...)
+
+.PHONY: lint
+lint:
+	golangci-lint run
+	@test -z "$$(git status -s . | grep -e "^ M"  | grep .cue | cut -d ' ' -f3 | tee /dev/stderr)"