Add docker cli package

Signed-off-by: Helder Correia <174525+helderco@users.noreply.github.com>

pkg/universe.dagger.io/docker/cli/client.cue

@@ -0,0 +1,84 @@
+package cli
+
+import (
+	"dagger.io/dagger"
+	"universe.dagger.io/docker"
+)
+
+// See https://github.com/dagger/dagger/issues/1856
+
+// Run a docker CLI command
+#Run: {
+	#RunSocket | #RunSSH | #RunTCP
+
+	_image: docker.#Pull & {
+		source: "docker:20.10.13-alpine3.15"
+	}
+
+	input: _image.output
+}
+
+// Connect via local docker socket
+#RunSocket: {
+	host: dagger.#Service
+
+	docker.#Run & {
+		mounts: docker: {
+			dest:     "/var/run/docker.sock"
+			contents: host
+		}
+	}
+}
+
+// Connect via SSH
+#RunSSH: {
+	host: =~"^ssh://.+"
+
+	ssh: {
+		// Private SSH key
+		key?: dagger.#Secret
+
+		// Known hosts file contents
+		knownHosts?: dagger.#Secret
+
+		// FIXME: implement keyPassphrase
+	}
+
+	docker.#Run & {
+		env: DOCKER_HOST: host
+
+		if ssh.key != _|_ {
+			mounts: ssh_key: {
+				dest:     "/root/.ssh/id_rsa"
+				contents: ssh.key
+			}
+		}
+
+		if ssh.knownHosts != _|_ {
+			mounts: ssh_hosts: {
+				dest:     "/root/.ssh/known_hosts"
+				contents: ssh.knownHosts
+			}
+		}
+	}
+}
+
+// Connect via HTTP/HTTPS
+#RunTCP: {
+	host: =~"^tcp://.+"
+
+	docker.#Run & {
+		env: DOCKER_HOST: host
+
+		// Directory with certificates to verify ({ca,cert,key}.pem files).
+		// This enables HTTPS.
+		certs?: dagger.#FS
+
+		if certs != _|_ {
+			mounts: "certs": {
+				dest:     "/certs/client"
+				contents: certs
+			}
+		}
+	}
+}