Add docker.#Client definition

Signed-off-by: Tom Chauveau <tom.chauveau@epitech.eu>

stdlib/docker/client.cue

@@ -0,0 +1,42 @@
+package docker
+
+import (
+	"dagger.io/dagger/op"
+	"dagger.io/alpine"
+)
+
+#Client: {
+	// Docker CLI version
+	version: *"20.10.6" | string
+
+	#Code: #"""
+	curl -fsSL https://download.docker.com/linux/static/stable/x86_64/docker-\#(version).tgz | tar zxvf - --strip 1 -C /usr/bin docker/docker
+	"""#
+
+	#up: [
+		op.#Load & {
+			from: alpine.#Image & {
+				package: bash:             true
+				package: jq:               true
+				package: curl:             true
+				package: "openssh-client": true
+			}
+		},
+
+		op.#WriteFile & {
+			content: #Code
+			dest:    "/entrypoint.sh"
+		},
+
+		op.#Exec & {
+			args: [
+				"/bin/sh",
+				"--noprofile",
+				"--norc",
+				"-eo",
+				"pipefail",
+				"/entrypoint.sh",
+			]
+		},
+	]
+}

stdlib/docker/docker.cue

@@ -91,7 +91,7 @@ import (
 	"""#
 
 	#up: [
-		op.#FetchContainer & {ref: "index.docker.io/docker:latest"},
+		op.#Load & {from: #Client},
 
 		op.#WriteFile & {
 			content: key