diff --git a/14.0/Dockerfile b/14.0/Dockerfile
index cc149da..e1ca54f 100644
--- a/14.0/Dockerfile
+++ b/14.0/Dockerfile
@@ -15,6 +15,9 @@ RUN pip install git+https://github.com/akretion/ak
 COPY repos.yml /root/.config/git-autoshare/repos.yml
 RUN pip install git-autoshare git-aggregator
 COPY bin/* /usr/local/bin/
+COPY install/* /install/
+
+# pre-fetch the git-autoshare cache with the bare minimum:
 ADD https://api.github.com/repos/odoo/odoo/git/refs/heads/14.0 version.json
 RUN mkdir -p /root/.cache/git-autoshare/github.com/odoo && \
     cd /root/.cache/git-autoshare/github.com/odoo && \
diff --git a/install/build-odoo b/install/build-odoo
new file mode 100755
index 0000000..86c58fa
--- /dev/null
+++ b/install/build-odoo
@@ -0,0 +1,25 @@
+#!/bin/bash
+set -e
+cd /odoo
+
+ak build -j1 -c odoo-spec.yaml -f odoo-frozen.yaml
+echo "AK BUILD DONE"
+# Clean useless file
+
+# Remove useless git directory
+rm -rf /odoo/src/.git
+
+# First, we eventually keep only the wanted odoo modules
+if [ -z "$(ls -A /odoo/links)" ]; then
+  echo "No addons set specified, keeping all addons"
+else
+  cp -r -L /odoo/links /odoo/odoo-addons
+  rm -rf /odoo/src/addons/*
+  mv /odoo/odoo-addons/* /odoo/src/addons
+fi
+
+# Second, we remove unwanted lang
+if [[ -n "$BUILD_RESTRICT_LANG" ]]; then
+  find /odoo/src/ -name *.po ! -name $BUILD_RESTRICT_LANG -type f -exec rm -v {} +
+fi
+