diff --git a/template/flake.nix b/template/flake.nix
index 6a59439..c319f38 100644
--- a/template/flake.nix
+++ b/template/flake.nix
@@ -1,5 +1,5 @@
 {
-  description = "devs & ops environment for nix'ing with triton";
+  description = "devshell nix module for triton DevOps shell environment";
 
   inputs.devshell.url = "github:numtide/devshell";
   inputs.flake-utils.url = "github:numtide/flake-utils";
@@ -12,46 +12,69 @@
       "x86_64-darwin"
       "x86_64-linux"
     ]
-    (
-      system:
-      let
-        pkgs = import nixpkgs {
-          inherit system;
+      (
+        system:
+        let
+          pkgs = import nixpkgs {
+            inherit system;
 
-          overlays = [
-            devshell.overlay
-            (import ./overlay.nix)
-          ];
-        };
-      in
-      {
-        devshellModules.tritonshell = { config, lib, ... }: {
-          options.environment = {
-            enable = lib.mkEnableOption "triton DevOps shell environment";
+            overlays = [
+              devshell.overlay
+              (import ./overlay.nix)
+            ];
           };
+        in
+        {
+          devshellModules.tritonshell = { config, lib, ... }:
+            with lib;
+            {
+              options = {
+                environment = {
+                  enable = mkEnableOption "triton DevOps shell environment";
+                  cnsBaseDomain = mkOption {
+                    description = "Base domain for generated CNS domain records";
+                    type = types.nullOr types.str;
+                    default = "greenbaum.zone";
+                  };
+                  dataCenters = mkOption {
+                    description = "List of available triton data centers";
+                    type = types.listOf types.str;
+                    default = [ "cgn-1" "lev-1" ];
+                  };
+                  mantaDomain = mkOption {
+                    description = "Domain for manta object storage service";
+                    type = types.nullOr types.str;
+                    default = "eu-central.manta.greenbaum.cloud";
+                  };
+                  tritonApiDomain = mkOption {
+                    description = "Domain for triton API";
+                    type = types.nullOr types.str;
+                    default = "api.greenbaum.cloud";
+                  };
+                };
+              };
 
-          config =
-            lib.mkIf config.environment.enable (import ./tritonshell.nix { inherit devshell pkgs self system; });
-        };
-        # Internal utility package with shell function and env vars helper.
-        # These get source'd in devshell.bash.extra when starting tritonshell
-        packages = {
-          triton-utils = import ./pkgs/triton-utils.nix { inherit pkgs; };
-          triton-docker-env =
-          let
-            # CUSTOMIZE:
-            # variables used to set triton env vars in tritonshell
-            # adjust to suit your Triton Data Center setup
-            # take a look at ./pkgs/triton-docker-env-shell.nix to see how these get used
-            cnsBaseDomain = "greenbaum.zone";
-            dataCenters = [ "cgn-1" "lev-1" ];
-            mantaDomain = "eu-central.manta.greenbaum.cloud";
-            tritonApiDomain = "api.greenbaum.cloud";
-          in
-          import ./pkgs/triton-docker-env.nix {
-            inherit pkgs cnsBaseDomain dataCenters mantaDomain tritonApiDomain;
+              config =
+                lib.mkIf config.environment.enable
+                  (import ./tritonshell.nix { inherit config devshell pkgs self system; });
+            };
+          # Internal utility package with shell function and env vars helper.
+          # These get source'd in devshell.bash.extra when starting tritonshell
+          packages = {
+            triton-utils = import ./pkgs/triton-utils.nix { inherit pkgs; };
+            triton-docker-env =
+              #let
+              #  # CUSTOMIZE:
+              #  # variables used to set triton env vars in tritonshell
+              #  # adjust to suit your Triton Data Center setup
+              #  # take a look at ./pkgs/triton-docker-env-shell.nix to see how these get used
+              #  cnsBaseDomain = "greenbaum.zone";
+              #  dataCenters = [ "cgn-1" "lev-1" ];
+              #  mantaDomain = "eu-central.manta.greenbaum.cloud";
+              #  tritonApiDomain = "api.greenbaum.cloud";
+              #in
+              import ./pkgs/triton-docker-env.nix { inherit pkgs; };
           };
-        };
-      }
-    );
+        }
+      );
 }
diff --git a/template/pkgs/triton-docker-env-shell.nix b/template/pkgs/triton-docker-env-shell.nix
index 55e0dae..15e4b19 100644
--- a/template/pkgs/triton-docker-env-shell.nix
+++ b/template/pkgs/triton-docker-env-shell.nix
@@ -1,31 +1,36 @@
-{ pkgs, cnsBaseDomain, dataCenters, mantaDomain, tritonApiDomain, ... }:
+{ pkgs, ... }:
 with pkgs.nodePackages;
 ''
-  export PATH="${triton}/bin:${json}/bin:$PATH"
-  # script to set the docker, triton, manta and CNS env vars for the current
+  # Script to set the docker, triton, manta and CNS env vars for the current
   # triton profile
+  # Docs: https://docs.greenbaum.cloud/en/devops/triton-cli.html
+  # triton CLI source: https://github.com/tritonDataCenter/node-triton
+  cnsBaseDomain=$TRITONSHELL_CNS_BASE_DOMAIN
+  dataCenters=$TRITONSHELL_DATA_CENTERS
+  mantaDomain=$TRITONSHELL_MANTA_DOMAIN
+  tritonApiDomain=$TRITONSHELL_TRITON_API_DOMAIN
 
-  # set triton and docker host environment variables
-  eval "$(triton env)"
+  # Set triton and docker host environment variables
+  eval "$(${triton}/bin/triton env)"
 
-  # get the user's UUID
-  triton_account_uuid="$(triton account get --json | json id)"
+  # Get the user's UUID
+  triton_account_uuid="$(${triton}/bin/triton account get --json | ${json}/bin/json id)"
 
-  # set the CNS (container name service) base for auto-generated DNS records
-  # in public and private networks
-  # note, this makes assumptions that only work if you configured the nix
-  # variables in flake.nix "CUSTOMIZE" section according to your Triton Data
-  # Center setup
-  for dc in ${pkgs.lib.concatStringsSep " " dataCenters}; do
-    if env | grep -q -E "SDC_URL=https://''${dc}.${tritonApiDomain}"; then
+  # Set the CNS (container name service) base domain for auto-generated DNS
+  # records in public and private networks
+  # Note: the defaults are configured to work with our data centers, adjust the
+  # nix module options like config.environment.cnsBaseDomain in your devshell
+  # if you'd like to use tritonshell with your own, self-hosted TritonDataCenter
+  for dc in "''${dataCenters[@]}"; do
+    if env | grep -q -E "SDC_URL=https://''${dc}.''${tritonApiDomain}"; then
       export \
-      TRITON_CNS_SEARCH_DOMAIN_PUBLIC="''${triton_account_uuid}.''${dc}.${cnsBaseDomain}" \
-      TRITON_CNS_SEARCH_DOMAIN_PRIVATE="''${triton_account_uuid}.''${dc}.int.${cnsBaseDomain}" \
+      TRITON_CNS_SEARCH_DOMAIN_PUBLIC="''${triton_account_uuid}.''${dc}.''${cnsBaseDomain}" \
+      TRITON_CNS_SEARCH_DOMAIN_PRIVATE="''${triton_account_uuid}.''${dc}.int.''${cnsBaseDomain}" \
       TRITON_DC=''$dc
     fi
   done
 
-  export MANTA_URL=https://${mantaDomain}
+  export MANTA_URL=https://''${mantaDomain}
   export MANTA_USER=$SDC_ACCOUNT
   export MANTA_KEY_ID=$SDC_KEY_ID
 ''
diff --git a/template/pkgs/triton-docker-env.nix b/template/pkgs/triton-docker-env.nix
index 416e2c7..6cd8c8c 100644
--- a/template/pkgs/triton-docker-env.nix
+++ b/template/pkgs/triton-docker-env.nix
@@ -1,2 +1,2 @@
-{ pkgs, cnsBaseDomain, dataCenters, mantaDomain, tritonApiDomain, ... }:
-(pkgs.writeShellScriptBin "triton-docker-env.sh" (import ./triton-docker-env-shell.nix { inherit pkgs cnsBaseDomain dataCenters mantaDomain tritonApiDomain; }))
+{ pkgs, ... }:
+(pkgs.writeShellScriptBin "triton-docker-env.sh" (import ./triton-docker-env-shell.nix { inherit pkgs; }))
diff --git a/template/tritonshell.nix b/template/tritonshell.nix
index fd52f79..47d647c 100644
--- a/template/tritonshell.nix
+++ b/template/tritonshell.nix
@@ -1,4 +1,11 @@
-{ devshell, pkgs, self, system, ... }:
+{ config, devshell, pkgs, self, system, ... }:
+let
+  tritonConfig = config.environment;
+  cnsBaseDomain = tritonConfig.cnsBaseDomain;
+  dataCenters = tritonConfig.dataCenters;
+  mantaDomain = tritonConfig.mantaDomain;
+  tritonApiDomain = tritonConfig.tritonApiDomain;
+in
 {
   # devshell docs: https://numtide.github.io/devshell/modules_schema.html
   name = "tritonshell";
@@ -60,8 +67,9 @@
     self.packages.${system}.triton-utils
     self.packages.${system}.triton-docker-env
     # useful for working with JSON data
-    jq
     bunyan-rs
+    jq
+    nodePackages.json
   ];
 
   env = [
@@ -87,6 +95,11 @@
 
   bash = {
     extra = ''
+      export \
+        TRITONSHELL_CNS_BASE_DOMAIN=${cnsBaseDomain} \
+        TRITONSHELL_DATA_CENTERS=(${pkgs.lib.concatStringsSep " " dataCenters}) \
+        TRITONSHELL_MANTA_DOMAIN=${mantaDomain} \
+        TRITONSHELL_TRITON_API_DOMAIN=${tritonApiDomain}
       if [ -z "$TRITON_DONT_SOURCE_PROFILE" ]; then
         source ${self.packages.${system}.triton-docker-env}/bin/triton-docker-env.sh
         source ${self.packages.${system}.triton-utils}/bin/ttp.sh