diff --git a/app/build_npms.py b/app/build_npms.py
index 81b215ab..812fb5c6 100644
--- a/app/build_npms.py
+++ b/app/build_npms.py
@@ -20,7 +20,6 @@
 
 import os
 from decouple import config
-import subprocess
 import click
 import pkg_resources
 from python_on_whales import docker
@@ -56,20 +55,12 @@ def command(ctx, include, exclude):
     if verbose:
         print(f'Packages: {packages}')
 
-    # To build a package we need to run the cerc/build-js container with a bind mount from the project directory
-    # and use docker run to execute the build script inside that container
-    # docker.run("cerc/builder-js", ["ls", "/host"], volumes=[("<project-dir-here>", "/workspace")])
-    # sh -c 'cd /workspace && NPM_AUTH_TOKEN=6613572a28ebebaee20ccd90064251fa8c2b94f6 \
-    # build-npm-package.sh http://host.docker.internal:3000/api/packages/cerc-io/npm/ 1.0.0-beta.1'
-    # NPM_AUTH_TOKEN=6613572a28ebebaee20ccd90064251fa8c2b94f6
-    # Set uid/gid
-
     def build_package(package):
         if not quiet:
             print(f"Building: {package}")
         repo_dir = package
         repo_full_path = os.path.join(dev_root_path, repo_dir)
-        build_command = ["sh", "-c", "'cd /workspace && build-npm-package.sh http://host.docker.internal:3000/api/packages/cerc-io/npm/ 1.0.0-beta.1'"]
+        build_command = ["sh", "-c", "cd /workspace && build-npm-package.sh http://host.docker.internal:3000/api/packages/cerc-io/npm/ 1.0.15"]
         if not dry_run:
             if verbose:
                 print(f"Executing: {build_command}")
@@ -77,9 +68,12 @@ def command(ctx, include, exclude):
                                       remove=True,
                                       interactive=True,
                                       tty=True,
-                                      envs={"NPM_AUTH_TOKEN": "6613572a28ebebaee20ccd90064251fa8c2b94f6"},
+                                      user=f"{os.getuid()}:{os.getgid()}",
+                                      envs={"CERC_NPM_AUTH_TOKEN": os.environ["CERC_NPM_AUTH_TOKEN"]},
                                       add_hosts=[("host.docker.internal", "host-gateway")],
-                                      volumes=[(repo_full_path, "/workspace")])
+                                      volumes=[(repo_full_path, "/workspace")],
+                                      command=build_command
+                                      )
             # TODO: check result in build_result.returncode
             print(f"Result is: {build_result}")
         else:
diff --git a/app/data/npm-package-list.txt b/app/data/npm-package-list.txt
index 6e0ead2d..3adedb5a 100644
--- a/app/data/npm-package-list.txt
+++ b/app/data/npm-package-list.txt
@@ -1 +1,4 @@
 gem
+laconic-sdk
+debug
+laconic-registry-cli
diff --git a/container-build/cerc-builder-js/README.md b/container-build/cerc-builder-js/README.md
index 865d39ef..da784efa 100644
--- a/container-build/cerc-builder-js/README.md
+++ b/container-build/cerc-builder-js/README.md
@@ -12,6 +12,6 @@ it is possible to build packages manually by invoking `docker run` , for example
 ```
 $ docker run --rm -it --add-host host.docker.internal:host-gateway \
   -v ${HOME}/cerc/laconic-registry-cli:/workspace cerc/builder-js  \
-  sh -c 'cd /workspace && NPM_AUTH_TOKEN=6613572a28ebebaee20ccd90064251fa8c2b94f6 \
+  sh -c 'cd /workspace && CERC_NPM_AUTH_TOKEN=6613572a28ebebaee20ccd90064251fa8c2b94f6 \
   build-npm-package-local-dependencies.sh http://host.docker.internal:3000/api/packages/cerc-io/npm/ 0.1.8'
 ```
diff --git a/container-build/cerc-builder-js/build-npm-package.sh b/container-build/cerc-builder-js/build-npm-package.sh
index 6161e23e..88cc974b 100755
--- a/container-build/cerc-builder-js/build-npm-package.sh
+++ b/container-build/cerc-builder-js/build-npm-package.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 # Usage: build-npm-package.sh <registry-url> <publish-with-this-version>
-# Note: supply the registry auth token in NPM_AUTH_TOKEN
+# Note: supply the registry auth token in CERC_NPM_AUTH_TOKEN
 if [ -n "$CERC_SCRIPT_DEBUG" ]; then
     set -x
 fi
@@ -8,15 +8,15 @@ if [[ $# -ne 2 ]]; then
     echo "Illegal number of parameters" >&2
     exit 1
 fi
-if [[ -z "${NPM_AUTH_TOKEN}" ]]; then
-    echo "NPM_AUTH_TOKEN is not set" >&2
+if [[ -z "${CERC_NPM_AUTH_TOKEN}" ]]; then
+    echo "CERC_NPM_AUTH_TOKEN is not set" >&2
     exit 1
 fi
 local_npm_registry_url=$1
 package_publish_version=$2
 npm config set @lirewine:registry ${local_npm_registry_url}
 npm config set @cerc-io:registry ${local_npm_registry_url}
-npm config set -- ${local_npm_registry_url}:_authToken ${NPM_AUTH_TOKEN}
+npm config set -- ${local_npm_registry_url}:_authToken ${CERC_NPM_AUTH_TOKEN}
 echo "Build and publish version ${package_publish_version}"
 yarn install
 yarn build