fix(nginx): regex

Author: mickael-garrido

nginx.conf

@@ -239,16 +239,14 @@ http {
         }
 
         # For blob requests by digest, do cache, and treat redirects.
-        #location ~ ^/v2/(.*)/blobs/sha256:(.*) {
-        location ~ ^/v2/([\w\-]+(?:(?:\/[\w\-]+)+|(?:[\w\-]+)+))/blobs/sha256:([0-9a-f]+) {
+        location ~ ^\/v2\/([\w\-]+\/)+blobs\/sha256:([0-9a-f]+) {
             set $docker_proxy_request_type "blob-by-digest";
             include "/opt/openresty/nginx/conf/nginx.manifest.common.conf";
         }
 
         # For manifest requests by digest, do cache, and treat redirects.
         # These are some of the requests that DockerHub will throttle.
-        #location ~ ^/v2/(.*)/manifests/sha256:([0-9a-f])*(.*) {
-        location ~ ^/v2/([\w\-]+(?:(?:\/[\w\-]+)+|(?:[\w\-]+)+))/manifests/sha256:([0-9a-f]+) {
+        location ~ ^\/v2\/([\w\-]+\/)+manifests\/sha256:([0-9a-f]+) {
             set $docker_proxy_request_type "manifest-by-digest";
             include "/opt/openresty/nginx/conf/nginx.manifest.common.conf";
         }
@@ -260,7 +258,7 @@ http {
 
         # Cache blobs requests that are not by digest
         # Since these are mutable, we invalidate them immediately and keep them only in case the backend is down
-        location ~ ^/v2/([\w\-]+(?:(?:\/[\w\-]+)+|(?:[\w\-]+)+))/blobs/ {
+        location ~ ^\/v2\/([\w\-]+\/)+blobs\/ {
             set $docker_proxy_request_type "blob-mutable";
             proxy_cache_valid 0s;
             include "/opt/openresty/nginx/conf/nginx.manifest.stale.conf";