docker build fixes (#23)

Author: ciur

docker/Dockerfile

@@ -28,10 +28,11 @@ COPY docker/supervisord.conf /etc/
 COPY docker/nginx.conf /etc/nginx/nginx.conf
 COPY poetry.lock pyproject.toml README.md ${APP_DIR}/
 COPY --from=build ${UI_DIR}/build /usr/share/nginx/html
-RUN poetry install --no-dev -vv
 
 COPY ./auth_server ${APP_DIR}/auth_server/
 
+RUN poetry install --only main -vv
+
 COPY docker/run.bash /run.bash
 RUN chmod +x /run.bash