use just busybox for image

flake.nix

@@ -32,16 +32,12 @@
         };
         dockerImage = pkgs.dockerTools.buildImage {
           name = "policy_service";
-          fromImageName = "hexpm/elixir";
-          fromImageTag = "1.17.5-erlang-27.0-debian-bookworm-20240612";
-          copyToRoot = pkgs.buildEnv {
-            name = "policy-service";
-            paths = [ package ];
-            pathsToLink = [ "/bin" ];
-          };
+          contents = [
+            package
+            pkgs.busybox
+          ];
           config = {
-            Cmd = [ "/bin/bash" ];
-            WorkingDir = "/";
+            Cmd = [ "${package}/bin/policy_service" "start" ];
           };
         };
       in

ops/chart/templates/postgresql.yaml

@@ -20,7 +20,6 @@ spec:
       owner: {{ .Values.postgresql.owner | default "policy_service" }}
   
   storage:
-    storageClass: {{ .Values.postgresql.storageClass | default "local-path" }}
     size: {{ .Values.postgresql.storageSize | default "1Gi" }}
   
   resources:

ops/chart/values.yaml

@@ -86,7 +86,6 @@ postgresql:
   instances: 1
   database: policy_service
   owner: policy_service
-  storageClass: local-path
   storageSize: 1Gi
   resources:
     requests: