add sh

modules/server/containers/apps/ethercalc.nix

@@ -8,6 +8,7 @@ let
   image = pkgs.dockerTools.streamLayeredImage {
     name = "ethercalc";
     tag = ethercalc_exe.version;
+    contents = [ pkgs.sh ];
     config = {
       Entrypoint = [ "${ethercalc_exe}/bin/ethercalc" ];
       ExposedPorts = { "8080/tcp" = {}; };