Buildkit Dev plugin (#464)

* Add buildkit-base dev plugin
* Change formatting
* Change containerPath on mountPath
* Allow to use any URI for plugin logo
* Set memory limitation to 1G
* Remove pattern to validate plugin logo image
* Return back pattern to validate plugin logo
* Update pattern to check plugin icon

Signed-off-by: Vitaliy Gulyy <vgulyy@redhat.com>

build/scripts/meta.yaml.schema

@@ -33,7 +33,7 @@
     },
     "icon": {
       "type": "string",
-      "pattern": "[-._a-zA-Z0-9]+?\\.(?:svg|png)(?:\\?.*)?$"
+      "pattern": "[-._a-zA-Z0-9]+?(?:\\?.*)?$"
     },
     "description": {
       "type": "string"

v3/plugins/moby/buildkit/0.7.1/meta.yaml

@@ -0,0 +1,23 @@
+apiVersion: v2
+publisher: moby
+name: buildkit
+version: 0.7.1
+type: Che Plugin
+displayName: Buildkit Base Dev Plugin
+title: Buildkit Base Dev Plugin
+description: Container to build docker images with buildkit
+icon: https://avatars3.githubusercontent.com/u/27259197
+repository: https://github.com/moby/buildkit
+firstPublicationDate: "2020-05-11"
+category: Other
+spec:
+  containers:
+   - name: buildkit-dev
+     image: "quay.io/eclipse/che-buildkit-base:0.7.1-bacb069"
+     mountSources: true
+     memoryLimit: "1Gi"
+     volumes:
+      - name: buildkit-share
+        mountPath: /home/user/.local/share/buildkit
+      - name: buildkit-lib
+        mountPath: /var/lib/buildkit

v3/plugins/moby/buildkit/latest.txt

@@ -0,0 +1 @@
+0.7.1