Removed all latest tags

public/v1/apps/ghost.json

@@ -36,7 +36,7 @@
                "MARIADB_ROOT_USER":"$$cap_db_user",
                "MARIADB_USER":"ghost"
             },
-            "image":"bitnami/mariadb:latest",
+            "image":"bitnami/mariadb:10.1",
             "restart":"always",
             "volumes":[
                "$$cap_appname-mariadb-data:/bitnami"

public/v1/apps/mongo-express.json

@@ -29,7 +29,7 @@
             "id": "$$cap_mongoexpress_version",
             "label": "Mongo Express Version Tag",
             "description": "Checkout their docker page for the valid tags https://hub.docker.com/r/library/mongo-express/tags/",
-            "defaultValue": "latest",
+            "defaultValue": "0.49",
             "validRegex": "/^([^\\s^\\/])+$/"
         },
         {

public/v1/apps/vsts.json

@@ -24,7 +24,7 @@
             "id": "$$cap_vsts_version",
             "label": "VSTS Version Tag",
             "description": "Checkout their docker page for the valid tags https://hub.docker.com/r/microsoft/vsts-agent/tags/",
-            "defaultValue": "latest",
+            "defaultValue": "ubuntu-16.04",
             "validRegex": "/^([^\\s^\\/])+$/"
         },
         {