engine.#Build support

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

tests/tasks/build/dockerfile_path.cue

@@ -0,0 +1,21 @@
+package testing
+
+import (
+	"alpha.dagger.io/europa/dagger/engine"
+)
+
+engine.#Plan & {
+	inputs: directories: testdata: path: "./testdata"
+
+	actions: {
+		build: engine.#Build & {
+			source: inputs.directories.testdata.contents
+			dockerfile: path: "./dockerfilepath/Dockerfile.custom"
+		}
+
+		verify: engine.#Exec & {
+			input: build.output
+			args: ["sh", "-c", "test $(cat /test) = dockerfilePath"]
+		}
+	}
+}