Add host to DockerComposeTransport.php

README.md

@@ -79,6 +79,8 @@ docker-compose --project dockerComposeProjectName --file docker-compose.yml --pr
 
 `docker.project` and `compose.options --project` do the same thing, docker.project existed before options.
 
+`docker.host` connects to a remote docker host. You can use ssh if you don't want to open the docker port. `host: ssh://user@host`
+
 `docker.service` is the exact name of the service as it appears in docker-compose.yml
 
 `docker.compose.version` defaults to `1`. Set to `2` to use the new syntax:

src/Transport/DockerComposeTransport.php

@@ -62,10 +62,18 @@ public function addChdir($cd, $args)
     protected function getTransport()
     {
         $version = $this->siteAlias->get('docker.compose.version', '1');
+        $host = $this->siteAlias->get('docker.host', '');
         if ($version == 2) {
-            $transport = ['docker', 'compose'];
+            $transport = ['docker'];
+            if ($host != '') {
+                $transport[] = Shell::preEscaped('-H ' . $host);
+            }
+            $transport[] = 'compose';
         } else {
             $transport = ['docker-compose'];
+            if ($host != '') {
+                $transport[] = Shell::preEscaped('-H ' . $host);
+            }
         }
         $project = $this->siteAlias->get('docker.project', '');
         $options = $this->siteAlias->get('docker.compose.options', '');

tests/Transport/DockerComposeTransportTest.php

@@ -80,6 +80,29 @@ public function wrapTestValues()
                     ]
                 ],
             ],
+            [
+                'docker-compose -H ssh://user@dockerhost -p project1 exec -T drupal ls',
+                [
+                    'docker' => [
+                        'service' => 'drupal',
+                        'host' => 'ssh://user@dockerhost',
+                        'project' => 'project1',
+                    ]
+                ],
+            ],
+            [
+                'docker -H ssh://user@dockerhost compose -p project1 exec -T drupal ls',
+                [
+                    'docker' => [
+                        'service' => 'drupal',
+                        'host' => 'ssh://user@dockerhost',
+                        'project' => 'project1',
+                        'compose' => [
+                            'version' => '2',
+                        ],
+                    ]
+                ],
+            ],
         ];
     }