Registry updated to v3 and from nginx to caddy

registry/files/config.yml

@@ -0,0 +1,18 @@
+version: 0.1
+log:
+  level: info
+  fields:
+    service: registry
+storage:
+  filesystem:
+    rootdirectory: /data
+auth:
+  htpasswd:
+    realm: Registry
+    path: /auth/registry.passwd
+http:
+  addr: :5000
+  secret: my-registry-secret
+  debug:
+    prometheus:
+      enabled: true