cue modules: move stdlib to pkg/alpha.dagger.io

In preparation for Europa, we will vendor multiple CUE modules:

- `pkg/alpha.dagger.io`: legacy non-europa packages
- `pkg/dagger.io`: core Europa packages
- `pkg/universe.dagger.io`: Europa universe

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

pkg/alpha.dagger.io/docker/compose/tests/compose.cue

@@ -0,0 +1,88 @@
+package compose
+
+import (
+	"alpha.dagger.io/dagger"
+	"alpha.dagger.io/docker"
+	"alpha.dagger.io/random"
+)
+
+repo: dagger.#Artifact @dagger(input)
+
+TestSSH: {
+	key:  dagger.#Secret @dagger(input)
+	host: string         @dagger(input)
+	user: string         @dagger(input)
+}
+
+TestCompose: {
+	// Generate a random string.
+	// Seed is used to force buildkit execution and not simply use a previous generated string.
+	suffix: random.#String & {seed: "cmp"}
+
+	name: "compose_test_\(suffix.out)"
+
+	up: #App & {
+		ssh: {
+			key:  TestSSH.key
+			host: TestSSH.host
+			user: TestSSH.user
+		}
+		source: repo
+		"name": name
+	}
+
+	verify: docker.#Command & {
+		ssh:     up.run.ssh
+		command: #"""
+				docker container ls | grep "\#(name)_api" | grep "Up"
+			"""#
+	}
+
+	cleanup: #CleanupCompose & {
+		context: up.run
+		"name":  name
+		ssh:     verify.ssh
+	}
+}
+
+TestInlineCompose: {
+	// Generate a random string.
+	// Seed is used to force buildkit execution and not simply use a previous generated string.
+	suffix: random.#String & {seed: "cmp-inline"}
+
+	name: "inline_test_\(suffix.out)"
+
+	up: #App & {
+		ssh: {
+			key:  TestSSH.key
+			host: TestSSH.host
+			user: TestSSH.user
+		}
+		source: repo
+		"name": name
+		composeFile: #"""
+			version: "3"
+
+			services:
+			  api-mix:
+			    build: .
+			    environment:
+			      PORT: 7000
+			    ports:
+			    - 7000
+			"""#
+	}
+
+	verify: docker.#Command & {
+		ssh:     up.run.ssh
+		command: #"""
+				docker container ls | grep "\#(name)_api-mix" | grep "Up"
+			"""#
+	}
+
+	cleanup: #CleanupCompose & {
+		context: up.run
+		"name":  name
+		ssh:     verify.ssh
+	}
+}