feat: WIP - On the fly svg to png converter

Dockerfile

@@ -1,4 +1,6 @@
-FROM nginx
+FROM nginx:alpine-perl
+
+RUN  apk add --no-cache rsvg-convert
 
 COPY files/ /
 RUN rm -f /usr/share/nginx/html/index.html

files/etc/nginx/conf.d/default.conf

@@ -47,10 +47,33 @@ server {
         return 301 https://minio.geokrety.org/statpic/$user_id.png;
     }
 
-    location ~* \.(eot|ttf|woff|woff2|js|css|jpg|jpeg|png|svg|gif|json)$ {
+    location ~* \.svg\.png$ {
         root   /usr/share/nginx/html;
         add_header Access-Control-Allow-Origin *;
         proxy_hide_header 'Cache-Control';
         add_header 'Cache-Control' "public, max-age=604800";
+
+        perl 'sub {
+            my $r = shift;
+            my $fn = $r->filename;
+            $fn =~ s{\.[^.]+$}{};
+
+            if (!-e $fn) {
+                $r->print($fn, " does not exist!");
+                $r->status(404);
+                return OK;
+            }
+            $r->send_http_header("image/png");
+            $r->print(`/usr/bin/rsvg-convert $fn`);
+            return OK;
+        }';
     }
+
+    location ~* \.(eot|ttf|woff|woff2|js|css|jpg|jpeg|png|gif|json)$ {
+        root   /usr/share/nginx/html;
+        add_header Access-Control-Allow-Origin *;
+        proxy_hide_header 'Cache-Control';
+        add_header 'Cache-Control' "public, max-age=604800";
+    }
+
 }

files/etc/nginx/nginx.conf

@@ -0,0 +1,33 @@
+load_module /usr/lib/nginx/modules/ngx_http_perl_module.so;
+
+user  nginx;
+worker_processes  auto;
+
+error_log  /var/log/nginx/error.log notice;
+pid        /var/run/nginx.pid;
+
+
+events {
+    worker_connections  1024;
+}
+
+
+http {
+    include       /etc/nginx/mime.types;
+    default_type  application/octet-stream;
+
+    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+                      '$status $body_bytes_sent "$http_referer" '
+                      '"$http_user_agent" "$http_x_forwarded_for"';
+
+    access_log  /var/log/nginx/access.log  main;
+
+    sendfile        on;
+    #tcp_nopush     on;
+
+    keepalive_timeout  65;
+
+    #gzip  on;
+
+    include /etc/nginx/conf.d/*.conf;
+}