Update Dockerfile

Author: fredvd

Dockerfile

@@ -18,8 +18,6 @@ COPY --from=builder --chown=500:500 /app /app
 # Enable compilation of po files into mo files (This is added here for backward compatibility)
 
 ENV zope_i18n_compile_mo_files=true
-# https://github.com/pypa/pip/issues/12079
-ENV _PIP_USE_IMPORTLIB_METADATA=0
 
 # Link /data (the exposed volume) into /app/var
 RUN ln -s /data /app/var