don't create cache/log volume

image.nix

@@ -3,9 +3,10 @@
 dockerTools.buildLayeredImage {
   name = "nginx";
   contents = [ nginx ];
+  # also we log to stderr, it still needs /var/log/nginx on start
   extraCommands = ''
-    mkdir -p etc
-    chmod u+w etc
+    mkdir -p etc var/cache/nginx var/log/nginx
+    chmod u+w etc var/cache/nginx var/log/nginx
     echo "nginx:x:1000:1000::/:" > etc/passwd
     echo "nginx:x:1000:nginx" > etc/group
   '';

module.nix

@@ -22,13 +22,9 @@ in {
             imagePullPolicy = "IfNotPresent";
             volumeMounts."/etc/nginx".name = "config";
             volumeMounts."/var/lib/html".name = "static";
-            volumeMounts."/var/log/nginx".name = "logs";
-            volumeMounts."/var/log/cache".name = "cache";
           };
           volumes.config.configMap.name = "nginx-config";
           volumes.static.configMap.name = "nginx-static";
-          volumes.logs.configMap.name = "nginx-logs";
-          volumes.cache.configMap.name = "nginx-cache";
         };
       };
     };