diff --git a/README.rst b/README.rst
index 1857264e..c5a91e55 100644
--- a/README.rst
+++ b/README.rst
@@ -20,7 +20,7 @@ Then, in any case you need to enable the plugins::
 
 Services will have to be re-configured and restarted, so you are probably better off just running launch again::
 
-    tutor local launch 
+    tutor local launch
 
 Note that this plugins is compatible with `Kubernetes integration <http://docs.tutor.overhang.io/k8s.html>`__. When deploying to a Kubernetes cluster, run instead::
 
@@ -124,19 +124,17 @@ Development
 
 When running Tutor in development mode, the ecommerce service is accessible at http://ecommerce.local.overhang.io:8130.
 
-To mount a local ecommerce repository in the ecommerce container, add the following content to the ``$(tutor config printroot)/env/dev/docker-compose.override.yml`` file::
+To mount a local ecommerce repository in the ecommerce container, add an auto-mounted repository with::
 
-    version: "3.7"
-    services:
-      ecommerce:
-        volumes:
-          - /absolute/path/to/ecommerce:/openedx/ecommerce
+    tutor mounts add /path/to/ecommerce
 
-You will have to generate static assets in your local repository::
+Rebuild the "ecommerce" Docker image::
 
-    tutor dev run ecommerce npm install
-    tutor dev run ecommerce ./node_modules/.bin/bower install --allow-root
-    tutor dev run ecommerce python3 manage.py update_assets --skip-collect
+    tutor images build ecommerce
+
+Lauch your platform again::
+
+    tutor dev launch
 
 To attach a debugger to the ecommerce service, run::
 
diff --git a/changelog.d/20230919_104436_regis_auto_mount.md b/changelog.d/20230919_104436_regis_auto_mount.md
new file mode 100644
index 00000000..2e051b24
--- /dev/null
+++ b/changelog.d/20230919_104436_regis_auto_mount.md
@@ -0,0 +1 @@
+- [Feature] Improve support of auto-mounted ecommerce repository. (by @regisb)
diff --git a/tutorecommerce/patches/local-docker-compose-jobs-services b/tutorecommerce/patches/local-docker-compose-jobs-services
index ff630e50..75e992cb 100644
--- a/tutorecommerce/patches/local-docker-compose-jobs-services
+++ b/tutorecommerce/patches/local-docker-compose-jobs-services
@@ -4,4 +4,7 @@ ecommerce-job:
       DJANGO_SETTINGS_MODULE: ecommerce.settings.tutor.production
     volumes:
       - ../plugins/ecommerce/apps/ecommerce/settings:/openedx/ecommerce/ecommerce/settings/tutor:ro
-    depends_on: {{ [("mysql", RUN_MYSQL)]|list_if }}
\ No newline at end of file
+      {%- for mount in iter_mounts(MOUNTS, "ecommerce") %}
+      - {{ mount }}
+      {%- endfor %}
+    depends_on: {{ [("mysql", RUN_MYSQL)]|list_if }}
diff --git a/tutorecommerce/patches/local-docker-compose-services b/tutorecommerce/patches/local-docker-compose-services
index 7612a4d9..3d0247fa 100644
--- a/tutorecommerce/patches/local-docker-compose-services
+++ b/tutorecommerce/patches/local-docker-compose-services
@@ -5,6 +5,9 @@ ecommerce:
   restart: unless-stopped
   volumes:
     - ../plugins/ecommerce/apps/ecommerce/settings:/openedx/ecommerce/ecommerce/settings/tutor:ro
+    {%- for mount in iter_mounts(MOUNTS, "ecommerce") %}
+    - {{ mount }}
+    {%- endfor %}
   depends_on:
     - discovery
     - lms
diff --git a/tutorecommerce/plugin.py b/tutorecommerce/plugin.py
index 6ab5be19..5c864724 100644
--- a/tutorecommerce/plugin.py
+++ b/tutorecommerce/plugin.py
@@ -224,9 +224,11 @@ def _mount_ecommerce_apps(mounts, path_basename):
 @tutor_hooks.Filters.IMAGES_BUILD_MOUNTS.add()
 def _mount_ecommerce_on_build(mounts: list[tuple[str, str]], host_path: str) -> list[tuple[str, str]]:
     path_basename = os.path.basename(host_path)
-    # payment MFE will be handled by the tutor-mfe plugin, but we need to fix the
-    # auto-mount for the ecommerce/order MFE
-    if path_basename == "frontend-app-ecommerce":
+    if path_basename == "ecommerce":
+        mounts.append(("ecommerce", "ecommerce-src"))
+    elif path_basename == "frontend-app-ecommerce":
+        # payment MFE will be handled by the tutor-mfe plugin, but we need to fix the
+        # auto-mount for the ecommerce/order MFE
         mounts.remove(("mfe", "ecommerce-src"))
         mounts.remove(("ecommerce-dev", "ecommerce-src"))
         mounts.append(("mfe", "orders-src"))
diff --git a/tutorecommerce/templates/ecommerce/build/ecommerce/Dockerfile b/tutorecommerce/templates/ecommerce/build/ecommerce/Dockerfile
index 1e1ba966..b7d25add 100644
--- a/tutorecommerce/templates/ecommerce/build/ecommerce/Dockerfile
+++ b/tutorecommerce/templates/ecommerce/build/ecommerce/Dockerfile
@@ -3,19 +3,48 @@
 FROM docker.io/ubuntu:20.04 as minimal
 
 RUN {% if is_buildkit_enabled() %}--mount=type=cache,target=/var/cache/apt,sharing=locked \
-    --mount=type=cache,target=/var/lib/apt,sharing=locked{% endif %} \ 
+    --mount=type=cache,target=/var/lib/apt,sharing=locked{% endif %} \
     apt update && \
-    apt install -y curl git-core language-pack-en libmysqlclient-dev libssl-dev python3 python3-pip python3-venv
+    apt install -y curl git-core language-pack-en
+
+###### Checkout code
+FROM minimal as checkout
+
+ARG ECOMMERCE_REPOSITORY=https://github.com/edx/ecommerce.git
+ARG ECOMMERCE_VERSION='{{ OPENEDX_COMMON_VERSION }}'
+RUN mkdir -p /openedx/ecommerce && \
+    git clone $ECOMMERCE_REPOSITORY --branch $ECOMMERCE_VERSION --depth 1 /openedx/ecommerce
+
+# Identify tutor user to cherry-pick commits
+RUN git config --global user.email "tutor@overhang.io" \
+  && git config --global user.name "Tutor"
+
+##### Empty layer with just the repo at the root.
+# This is useful when overriding the build context with a host repo:
+# docker build --build-context /path/to/ecommerce
+FROM scratch as ecommerce-src
+COPY --from=checkout /openedx/ecommerce /
+
+###### Install python and virtual environment
+FROM minimal as python
+
+RUN {% if is_buildkit_enabled() %}--mount=type=cache,target=/var/cache/apt,sharing=locked \
+    --mount=type=cache,target=/var/lib/apt,sharing=locked{% endif %} \
+    apt update && \
+    apt install -y libmysqlclient-dev libssl-dev python3 python3-pip python3-venv
 
 ARG APP_USER_ID=1000
 RUN if [ "$APP_USER_ID" = 0 ]; then echo "app user may not be root" && false; fi
 RUN useradd --home-dir /openedx --create-home --shell /bin/bash --uid ${APP_USER_ID} app
 USER ${APP_USER_ID}
 
+# Create cache dir. Otherwise, for some reason, it becomes owned by root.
+RUN mkdir /openedx/.cache
+
 # Create python venv
 RUN python3 -m venv /openedx/venv/
 ENV PATH "/openedx/venv/bin:$PATH"
-RUN {% if is_buildkit_enabled() %}--mount=type=cache,target=/openedx/.cache/pip,sharing=shared {% endif %}pip install \
+RUN {% if is_buildkit_enabled() %}--mount=type=cache,target=/openedx/.cache/pip,sharing=shared,uid=${APP_USER_ID} {% endif %}pip install \
     # https://pypi.org/project/setuptools/
     # https://pypi.org/project/pip/
     # https://pypi.org/project/wheel/
@@ -27,26 +56,19 @@ RUN pip install nodeenv==1.7.0
 RUN nodeenv /openedx/nodeenv --node=16.20.0 --prebuilt
 ENV PATH /openedx/nodeenv/bin:${PATH}
 
-# Install ecommerce
-ARG ECOMMERCE_REPOSITORY=https://github.com/edx/ecommerce.git
-ARG ECOMMERCE_VERSION='{{ OPENEDX_COMMON_VERSION }}'
-RUN mkdir -p /openedx/ecommerce && \
-    git clone $ECOMMERCE_REPOSITORY --branch $ECOMMERCE_VERSION --depth 1 /openedx/ecommerce
+# Copy ecommerce source code
+COPY --from=ecommerce-src --chown=app:app / /openedx/ecommerce
 WORKDIR /openedx/ecommerce
 
-# Identify tutor user to cherry-pick commits
-RUN git config --global user.email "tutor@overhang.io" \
-  && git config --global user.name "Tutor"
-
 # Install npm, bower requirements
 ARG NPM_REGISTRY='{{ NPM_REGISTRY }}'
 RUN {% if is_buildkit_enabled() %}--mount=type=cache,target=/openedx/.npm/,sharing=shared,uid=${APP_USER_ID} {% endif %}npm clean-install --verbose --no-audit --registry=$NPM_REGISTRY
 RUN {% if is_buildkit_enabled() %}--mount=type=cache,target=/openedx/.cache/bower,sharing=shared,uid=${APP_USER_ID} {% endif %}./node_modules/.bin/bower install --allow-root
 
 # python requirements
-RUN {% if is_buildkit_enabled() %}--mount=type=cache,target=/openedx/.cache/pip,sharing=shared {% endif %}pip install -r requirements.txt
+RUN {% if is_buildkit_enabled() %}--mount=type=cache,target=/openedx/.cache/pip,sharing=shared,uid=${APP_USER_ID} {% endif %}pip install -r requirements.txt
 # https://pypi.org/project/uWSGI/
-RUN {% if is_buildkit_enabled() %}--mount=type=cache,target=/openedx/.cache/pip,sharing=shared {% endif %}pip install uwsgi==2.0.21
+RUN {% if is_buildkit_enabled() %}--mount=type=cache,target=/openedx/.cache/pip,sharing=shared,uid=${APP_USER_ID} {% endif %}pip install uwsgi==2.0.21
 
 # Install private requirements: this is useful for installing custom payment processors.
 COPY --chown=app:app ./requirements/ /openedx/requirements
@@ -54,7 +76,7 @@ RUN cd /openedx/requirements/ \
   && touch ./private.txt \
   && pip install -r ./private.txt
 
-{% for extra_requirement in ECOMMERCE_EXTRA_PIP_REQUIREMENTS %}RUN {% if is_buildkit_enabled() %}--mount=type=cache,target=/openedx/.cache/pip,sharing=shared {% endif %}pip install '{{ extra_requirement }}'
+{% for extra_requirement in ECOMMERCE_EXTRA_PIP_REQUIREMENTS %}RUN {% if is_buildkit_enabled() %}--mount=type=cache,target=/openedx/.cache/pip,sharing=shared,uid=${APP_USER_ID} {% endif %}pip install '{{ extra_requirement }}'
 {% endfor %}
 
 # Collect static assets (aka: "make static")
diff --git a/tutorecommerce/templates/ecommerce/tasks/ecommerce/init b/tutorecommerce/templates/ecommerce/tasks/ecommerce/init
index 6e97a110..eb89016e 100644
--- a/tutorecommerce/templates/ecommerce/tasks/ecommerce/init
+++ b/tutorecommerce/templates/ecommerce/tasks/ecommerce/init
@@ -42,3 +42,12 @@
   --discovery_api_url={% if ENABLE_HTTPS %}https{% else %}http{% endif %}://{{ DISCOVERY_HOST }}/api/v1/ \
   --enable-microfrontend-for-basket-page=true \
   --payment-microfrontend-url="{% if ENABLE_HTTPS %}https{% else %}http{% endif %}://{{ MFE_HOST }}/{{ ECOMMERCE_PAYMENT_MFE_APP['name'] }}"
+
+if [ ! -e /openedx/ecommerce/node_modules ]
+then
+  # node_modules directory does not exist, this almost certainly means that the
+  # ecommerce directory was bind-mounted. We need to bootstrap that directory.
+  npm clean-install --verbose --no-audit
+  ./node_modules/.bin/bower install --allow-root
+  ./manage.py update_assets --skip-collect
+fi