dagger do action options flags

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

tests/plan/do/do_flags.cue

@@ -0,0 +1,61 @@
+package flags
+
+import (
+	"dagger.io/dagger"
+
+	"universe.dagger.io/alpine"
+	"universe.dagger.io/bash"
+)
+
+dagger.#Plan & {
+	client: filesystem: "./test_do": write: contents: actions.test.one.export.files["/output.txt"]
+
+	actions: {
+		foo: "bar"
+		// Pull alpine image
+		image: alpine.#Build & {
+			packages: bash: {}
+		}
+
+		// Run test
+		test: {
+			// Which name?
+			name: string | *"World"
+			// What message?
+			message: string
+			// How many?
+			num: float
+			// on or off?
+			doit: bool | *true
+			// this is foo2
+			foo2: foo
+			// do the first thing
+			one: bash.#Run & {
+				input: image.output
+				script: contents: "echo Hello \(name)! \(doit) > /output.txt"
+				export: files: "/output.txt": string
+			}
+
+			// Do the second thing
+			two: bash.#Run & {
+				input: image.output
+				script: contents: "true"
+			}
+
+			// Do the third thing
+			three: bash.#Run & {
+				input: image.output
+				script: contents: "cat /one/output.txt"
+				mounts: output: {
+					contents: one.export.rootfs
+					dest:     "/one"
+				}
+			}
+		}
+		// !!! DON'T RUN ME !!!
+		notMe: bash.#Run & {
+			input: image.output
+			script: contents: "false"
+		}
+	}
+}