engine.#Copy

Signed-off-by: Joel Longtine <joel@dagger.io>

tests/tasks/copy/copy_exec_invalid.cue

@@ -0,0 +1,47 @@
+package main
+
+import (
+	"alpha.dagger.io/europa/dagger/engine"
+)
+
+engine.#Plan & {
+	actions: {
+		image: engine.#Pull & {
+			source: "alpine:3.15.0@sha256:e7d88de73db3d3fd9b2d63aa7f447a10fd0220b7cbf39803c803f2af9ba256b3"
+		}
+
+		exec: engine.#Exec & {
+			input: image.output
+			args: [
+				"sh", "-c",
+				#"""
+					echo -n hello world from dagger > /output.txt
+					"""#,
+			]
+		}
+
+		verify_file: engine.#ReadFile & {
+			input: exec.output
+			path:  "/output.txt"
+		} & {
+			// assert result
+			contents: "hello world from dagger"
+		}
+
+		copy: engine.#Copy & {
+			input: image.output
+			source: {
+				root: exec.output
+				path: "/output.txt"
+			}
+			dest: "/output.txt"
+		}
+		verify_copy: engine.#ReadFile & {
+			input: copy.output
+			path:  "/output.txt"
+		} & {
+			// assert result
+			contents: "hello world"
+		}
+	}
+}