Improve examples using go & docker stdlib packages

Signed-off-by: Solomon Hykes <sh.github.6811@hykes.org>

examples/dagger-dev/main.cue

@@ -0,0 +1,46 @@
+package main
+
+// A dagger configuration to build and test the dagger source code.
+// This configuration can easily be adapted to build and test any go project.
+//
+//
+// Example:
+//   dagger compute ./examples/dagger-dev --input-dir repository=/path/to/go/project
+
+import (
+	"dagger.io/dagger"
+	"dagger.io/go"
+	"dagger.io/docker"
+)
+
+repository: dagger.#Dir
+
+// Build `dagger` using Go
+build: go.#Build & {
+	source:   repository
+	packages: "./cmd/dagger"
+	output:   "/usr/local/bin/dagger"
+}
+
+// Run go tests
+test: go.#Test & {
+	source:   repository
+	packages: "./..."
+}
+
+// Run a command with the binary we just built
+help: docker.#Run & {
+	image: build
+	args: ["dagger", "-h"]
+}
+
+// Build dagger using the (included) Dockerfile
+buildWithDocker: docker.#Build & {
+	source: repository
+}
+
+// Run a command in the docker image we just built
+helpFromDocker: docker.#Run & {
+	image: buildWithDocker.image
+	args: ["dagger", "-h"]
+}

examples/dogfood/main.cue

@@ -1,39 +0,0 @@
-package main
-
-import (
-	"dagger.io/dagger"
-	"dagger.io/go"
-)
-
-repository: dagger.#Dir // Use `--input-dir repository=.` from the root directory of the project
-
-// Build `dagger` using Go
-build: go.#Build & {
-	source:   repository
-	packages: "./cmd/dagger"
-	output:   "/usr/local/bin/dagger"
-}
-
-test: go.#Test & {
-	source:   repository
-	packages: "./..."
-}
-
-// Run a command with the binary we just built
-help: #compute: [
-	dagger.#Load & {from: build},
-	dagger.#Exec & {args: ["dagger", "-h"]},
-]
-
-// Build dagger using the (included) Dockerfile
-buildWithDocker: #compute: [
-	dagger.#DockerBuild & {
-		context: repository
-	},
-]
-
-// Run a command in the docker image we just built
-helpFromDocker: #compute: [
-	dagger.#Load & {from: buildWithDocker},
-	dagger.#Exec & {args: ["dagger", "-h"]},
-]

examples/react-netlify/main.cue

@@ -1,17 +1,15 @@
 package main
 
 import (
-	"dagger.io/dagger"
 	"dagger.io/netlify"
 	"dagger.io/yarn"
+	"dagger.io/git"
 )
 
-repository: #compute: [
-	dagger.#FetchGit & {
-		remote: "https://github.com/kabirbaidhya/react-todo-app.git"
-		ref:    "624041b17bd62292143f99bce474a0e3c2d2dd61"
-	},
-]
+repository: git.#Repository & {
+	remote: "https://github.com/kabirbaidhya/react-todo-app.git"
+	ref:    "624041b17bd62292143f99bce474a0e3c2d2dd61"
+}
 
 todoApp: netlify.#Site & {
 	account: {

examples/simple/simple.cue

@@ -1,68 +0,0 @@
-package simple
-
-import (
-	"dagger.io/dagger"
-)
-
-let alpine = {
-	digest: "sha256:3c7497bf0c7af93428242d6176e8f7905f2201d8fc5861f45be7a346b5f23436"
-	package: [string]: true | false | string
-	#compute: [
-		{
-			do:  "fetch-container"
-			ref: "index.docker.io/alpine@\(digest)"
-		},
-		for pkg, info in package {
-			if (info & true) != _|_ {
-				do: "exec"
-				args: ["apk", "add", "-U", "--no-cache", pkg]
-			}
-			if (info & string) != _|_ {
-				do: "exec"
-				args: ["apk", "add", "-U", "--no-cache", "\(pkg)\(info)"]
-			}
-		},
-	]
-}
-
-www: {
-
-	source: dagger.#Dir
-
-	// List the contents of the source directory
-	listing: {
-		string
-
-		#compute: [
-			dagger.#Load & {
-				from: alpine
-			},
-			dagger.#Exec & {
-				args: ["sh", "-c", "ls /src > /tmp/out"]
-				mount: "/src": from: source
-			},
-			dagger.#Export & {
-				source: "/tmp/out"
-			},
-		]
-	}
-
-	host: string
-
-	url: {
-		string
-
-		#compute: [
-			{
-				do:   "load"
-				from: alpine
-			},
-			dagger.#Exec & {
-				args: ["sh", "-c", "echo -n 'https://\(host)/foo' > /tmp/out"]
-			},
-			dagger.#Export & {
-				source: "/tmp/out"
-			},
-		]
-	}
-}