Add docker compose configuration for v1 and v2

Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)

contrib/compose/nginx/registry.conf

@@ -0,0 +1,36 @@
+# Docker registry proxy for api versions 1 and 2
+
+upstream docker-registry {
+  server registryv1:5000;
+}
+
+upstream docker-registry-v2 {
+  server registryv2:5000;
+}
+
+# No client auth or TLS
+server {
+  listen 5000;
+  server_name localhost;
+
+  # disable any limits to avoid HTTP 413 for large image uploads
+  client_max_body_size 0;
+
+  # required to avoid HTTP 411: see Issue #1486 (https://github.com/docker/docker/issues/1486)
+  chunked_transfer_encoding on;
+
+  location /v2/ {
+    # Do not allow connections from docker 1.5 and earlier
+    # docker pre-1.6.0 did not properly set the user agent on ping, catch "Go *" user agents
+    if ($http_user_agent ~ "^(docker\/1\.(3|4|5(?!\.[0-9]-dev))|Go ).*$" ) {
+      return 404;
+    }
+
+    include               docker-registry-v2.conf;
+  }
+
+  location / {
+    include               docker-registry.conf;
+  }
+}
+