Update Dockerfile

Dockerfile

@@ -34,7 +34,7 @@ RUN mkdir -p /content/numbacache
 RUN chmod -R 777 /content/numbacache
 
 # try fix
-# PermissionError: [Errno 13] Permission denied: '/.cache' (demucs)
+# PermissionError: [Errno 13] Permission denied: '/.cache' (Demucs)
 RUN mkdir -p /content/demucscache
 RUN chmod -R 777 /content/demucscache
 RUN ln -s /content/demucscache /.cache
@@ -43,9 +43,9 @@ RUN ln -s /content/demucscache /.cache
 WORKDIR /content
 
 # set environment
-# PYTORCH_NO_CUDA_MEMORY_CACHING is can help users with even smaller RAM such as 2GB  (Demucs)
-#ENV PYTORCH_NO_CUDA_MEMORY_CACHING=1 \
-ENV MPLCONFIGDIR=/content/mplconfig \
+# PYTORCH_NO_CUDA_MEMORY_CACHING can help users with even smaller RAM such as 2GB (Demucs)
+ENV PYTORCH_NO_CUDA_MEMORY_CACHING=1 \
+    MPLCONFIGDIR=/content/mplconfig \
     NUMBA_CACHE_DIR=/content/numbacache
 
 # upgrade pip