stdlib: add random package

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

tests/stdlib/docker/push-pull/push-pull.cue

@@ -5,6 +5,7 @@ import (
 	"dagger.io/dagger/op"
 	"dagger.io/alpine"
 	"dagger.io/docker"
+	"dagger.io/random"
 )
 
 source: dagger.#Artifact
@@ -15,9 +16,11 @@ registry: {
 }
 
 TestPushAndPull: {
-	random: #Random & {}
+	tag: random.#String & {
+		seed: ""
+	}
 
-	ref: "daggerio/ci-test:\(random.out)"
+	ref: "daggerio/ci-test:\(tag.out)"
 
 	// Create image
 	image: docker.#ImageFromDockerfile & {

tests/stdlib/docker/push-pull/random.cue

@@ -1,49 +0,0 @@
-package main
-
-import (
-	"strconv"
-
-	"dagger.io/alpine"
-	"dagger.io/dagger/op"
-)
-
-#Random: {
-	size: *12 | number
-
-	out: {
-		string
-
-		#up: [
-			op.#Load & {from: alpine.#Image & {
-				package: python3: "=~3.8"
-			}},
-
-			op.#WriteFile & {
-				dest: "/entrypoint.py"
-				content: #"""
-					import random
-					import string
-					import os
-
-					size = int(os.environ['SIZE'])
-					letters = string.ascii_lowercase
-
-					print ( ''.join(random.choice(letters) for i in range(size)) )
-					"""#
-			},
-
-			op.#Exec & {
-				always: true
-				args: ["sh", "-c", #"""
-					printf "$(python3 /entrypoint.py)" > /rand
-					"""#,
-				]
-				env: SIZE: strconv.FormatInt(size, 10)
-			},
-
-			op.#Export & {
-				source: "/rand"
-			},
-		]
-	}
-}