Include the version file in the final docker image.

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

.dockerignore

@@ -6,5 +6,6 @@ db.sqlite*
 docker
 !docker/etc
 !docker/entrypoint.sh
+!docker/version
 ./.*
 docs

docker/Dockerfile

@@ -112,6 +112,8 @@ COPY --from=BUILDER_IMAGE /code/contrib/scripts/docker/run-tests.sh .
 
 COPY --from=BUILDER_IMAGE /code/requirements/testing-base.txt requirements-testing.txt
 
+COPY --from=BUILDER_IMAGE /code/docker/version .
+
 # Install build Mayan EDMS
 RUN pip install *.whl && \
 rm *.whl