Ensure that the import problem is reproducible

docker/ubuntu/docker-compose.yml

@@ -1,23 +1,25 @@
-version: "3.7"
 services:
-  zms5:
-    build: .
-    image: zms5:ubuntu
-    ports:
-      - 8085:8085
-      - 8086:8086
-      - 8080:8080
-      - 5678:5678
-    environment:
-      - PYTHONUNBUFFERED="1"
-      - CONFIG_FILE="/home/zope/etc/zope.ini"
-      - INSTANCE_HOME="/home/zope"
-      - CLIENT_HOME="/home/zope"
-      - PYTHON="/home/zope/venv/bin/python"
-      - SOFTWARE_HOME="/home/zope/venv/bin"
-    volumes:
-      - ./etc/:/home/zope/etc/
-      - ./Extensions/:/home/zope/Extensions/:rw
-      - ./var/:/home/zope/var/
+    zms5:
+        image: zms5:ubuntu
+        pull_policy: build
+        build:
+            context: ../../
+            dockerfile: docker/ubuntu/dockerfile
+        ports:
+            - 8085:8085
+            - 8086:8086
+            - 8080:8080
+            - 5678:5678
+        environment:
+            - PYTHONUNBUFFERED="1"
+            - CONFIG_FILE="/home/zope/etc/zope.ini"
+            - INSTANCE_HOME="/home/zope"
+            - CLIENT_HOME="/home/zope"
+            - PYTHON="/home/zope/venv/bin/python"
+            - SOFTWARE_HOME="/home/zope/venv/bin"
+        volumes:
+            - ./etc/:/home/zope/etc/
+            - ./Extensions/:/home/zope/Extensions/:rw
+            - ./var/:/home/zope/var/
 
-    # command: /home/zope/etc/start.sh
+        # command: /home/zope/etc/start.sh

docker/ubuntu/dockerfile

@@ -24,8 +24,15 @@ ENV LANGUAGE=en_US.UTF-8
 
 RUN python3 -m venv venv
 RUN pip install -U pip wheel setuptools
-RUN pip install -U -e git+https://github.com/zopefoundation/Zope.git@master#egg=Zope
-RUN pip install -U -e git+https://github.com/zms-publishing/ZMS.git#egg=ZMS
+# RUN pip install -U -e git+https://github.com/zopefoundation/Zope.git@master#egg=Zope
+# RUN pip install -U -e git+https://github.com/zms-publishing/ZMS.git#egg=ZMS
+RUN pip install Zope
+COPY --chown=zope:zope Products Products
+COPY --chown=zope:zope pyproject.toml setup.cfg setup.py requirements.txt \
+    README.rst requirements-zeo.txt \
+    .
+RUN pip install -e .
+
 RUN pip install -r https://raw.githubusercontent.com/zms-publishing/ZMS5/master/requirements-full.txt
 RUN pip install ZEO
 RUN pip install itsdangerous
@@ -34,9 +41,9 @@ RUN pip install itsdangerous
 # Create Zope Instance
 RUN mkwsgiinstance -d . -u admin:admin
 
-COPY ./etc etc
-COPY ./var var
-COPY ./Extensions Extensions
+COPY docker/ubuntu/etc etc
+COPY docker/ubuntu/var var
+COPY docker/ubuntu/Extensions Extensions
 
 EXPOSE 8085
 EXPOSE 8086
@@ -45,4 +52,4 @@ EXPOSE 5678
 
 # Finally Start ZEO/Zope by Script
 # ENTRYPOINT ["/bin/sh -c"]
-CMD ["/home/zope/etc/start.sh"]
+CMD ["/home/zope/etc/start.sh"]

docker/ubuntu/import_fail_reproduction.py

@@ -0,0 +1,11 @@
+import importlib
+import pkgutil
+from pprint import pprint
+
+import Products
+# what the __path__ contains
+pprint(Products.__path__)
+# what python packaging suggests
+pprint(list(pkgutil.iter_modules(Products.__path__, Products.__name__ + ".")))
+# what the __path__ contains
+pprint(Products.__path__)