When I use `docker compose build` I encounter the following problem: ```plaintext ------ > [backend 7/15] RUN rm /opt/conda/bin/ffmpeg && ln -s /bin/ffmpeg /opt/conda/bin/ffmpeg: 0.117 rm: cannot remove '/opt/conda/bin/ffmpeg': No such file or directory ------ failed to solve: process "/bin/sh -c rm /opt/conda/bin/ffmpeg && ln -s /bin/ffmpeg /opt/conda/bin/ffmpeg" did not complete successfully: exit code: 1 ``` I found that changing ```dockerfile RUN rm /opt/conda/bin/ffmpeg && ln -s /bin/ffmpeg /opt/conda/bin/ffmpeg ``` to ```dockerfile RUN [ -f /opt/conda/bin/ffmpeg ] && rm /opt/conda/bin/ffmpeg; ln -s /bin/ffmpeg /opt/conda/bin/ffmpeg ``` resolves the issue.