Added v2

public/v2/apps/nextcloud.json

@@ -0,0 +1,29 @@
+{
+    "captainVersion": "2",
+    "documentation": "Taken from https://hub.docker.com/_/nextcloud",
+    "dockerCompose": {
+        "version": "3.3",
+        "services": {
+            "$$cap_appname": {
+                "image": "nextcloud:$$cap_nextcloud_version",
+                "volumes": [
+                    "$$cap_appname-data:/var/www/html"
+                ],
+                "restart": "always",
+                "environment": {}
+            }
+        }
+    },
+    "instructions": {
+        "start": "A safe home for all your data. Access & share your files, calendars, contacts, mail & more from any device, on your terms. http://Nextcloud.com",
+        "end": "'NextCloud is deployed and available as $$cap_appname"
+    },
+    "variables": [{
+        "id": "$$cap_nextcloud_version",
+        "label": "NextCloud Version",
+        "defaultValue": "15",
+        "description": "Checkout their docker page for the valid tags https://hub.docker.com/r/library/nextcloud/tags/",
+        "validRegex": "/^([^\\s^\\/])+$/"
+    }]
+
+}