Fix: The lock was not working because:

1. The Account Types sent were sqlqueries and not integer literals
2. Voucher Types and Account Types were being compared to VoucherTypesSelected and AccountTypesSelected objects and not their ids.

docker/app/Dockerfile

@@ -7,9 +7,8 @@ RUN npm install --unsafe-perm && /app/overlord/node_modules/.bin/ng build
 
 FROM python:latest
 LABEL maintainer="Amritanshu <docker@tanshu.com>"
-COPY --from=builder /app/brewman /app
-COPY --from=builder /app/frontend /app/frontend
-WORKDIR /app
+
+ADD https://git.tanshu.com/tanshu/brewman/raw/tag/latest/brewman/pyproject.toml /app/pyproject.toml
 
 # Install Poetry
 RUN curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/install-poetry.py | POETRY_HOME=/opt/poetry python && \
@@ -17,10 +16,15 @@ RUN curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/inst
     ln -s /opt/poetry/bin/poetry && \
     poetry config virtualenvs.create false
 
+WORKDIR /app
+
 # Allow installing dev dependencies to run tests
 ARG INSTALL_DEV=false
 RUN bash -c "if [ $INSTALL_DEV == 'true' ] ; then poetry install --no-root ; else poetry install --no-root --no-dev ; fi"
 
+COPY --from=builder /app/brewman /app
+COPY --from=builder /app/frontend /app/frontend
+
 ENV PYTHONPATH=/app
 EXPOSE 80
 VOLUME /frontend
@@ -30,4 +34,4 @@ RUN chmod 777 /app/docker-entrypoint.sh \
     && ln -s /app/docker-entrypoint.sh /
 ENTRYPOINT ["docker-entrypoint.sh"]
 
-CMD ["python", "-m", "brewman"]
+CMD ["poetry", "run", "python", "-m", "brewman"]