stdlib: added support for local docker socket

Signed-off-by: Sam Alba <sam.alba@gmail.com>

stdlib/docker/command.cue

@@ -57,6 +57,9 @@ import (
 		[string]: true @dagger(input)
 	}
 
+	// Mount docker socket
+	socket?: dagger.#Stream @dagger(input)
+
 	// Additional packages to install
 	package: {
 		[string]: true | false | string @dagger(input)
@@ -213,6 +216,9 @@ import (
 						"/keyPassphrase": secret: ssh.keyPassphrase
 					}
 				}
+				if socket != _|_ {
+					"/var/run/docker.sock": stream: socket
+				}
 				for dest, o in mount {
 					"\(dest)": o
 				}

stdlib/docker/compose/compose.cue

@@ -28,6 +28,9 @@ import (
 		keyPassphrase?: dagger.#Secret @dagger(input)
 	}
 
+	// Mount local docker socket
+	socket?: dagger.#Stream & dagger.#Input
+
 	// Accept either a contaxt, a docker-compose or both together
 	source?:      dagger.#Artifact @dagger(input)
 	composeFile?: string           @dagger(input)
@@ -65,7 +68,13 @@ import (
 		"""#
 
 	run: docker.#Command & {
-		"ssh":   ssh
+		if ssh != _|_ {
+			"ssh": ssh
+		}
+		if socket != _|_ {
+			"socket": socket
+		}
+
 		command: #code
 		package: "docker-compose": true
 		"registries": registries

stdlib/docker/docker.cue

@@ -102,7 +102,7 @@ import (
 
 #Run: {
 	// Connect to a remote SSH server
-	ssh: {
+	ssh?: {
 		// ssh host
 		host: dagger.#Input & {string}
 
@@ -122,6 +122,9 @@ import (
 		keyPassphrase?: dagger.#Input & {dagger.#Secret}
 	}
 
+	// Mount local docker socket
+	socket?: dagger.#Stream & dagger.#Input
+
 	// Image reference (e.g: nginx:alpine)
 	ref: dagger.#Input & {string}
 
@@ -147,7 +150,13 @@ import (
 		"""#
 
 	run: #Command & {
-		"ssh":   ssh
+		if ssh != _|_ {
+			"ssh": ssh
+		}
+		if socket != _|_ {
+			"socket": socket
+		}
+
 		command: #command
 		env: {
 			IMAGE_REF: ref