Refactor container working dirs

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

packages/docker/shlink/default.nix

@@ -70,12 +70,12 @@ pkgs.dockerTools.buildImage {
 
   config = {
     Entrypoint = [ "entrypoint" ];
+    ExposedPorts = {
+      "8080/tcp" = { };
+    };
     WorkingDir = "/var/www/shlink";
     Volumes = {
       "/var/www/shlink/data" = { };
     };
-    ExposedPorts = {
-      "8080/tcp" = { };
-    };
   };
 }