Added support for yt-dlp 'temp' path

- Added support for yt-dlp 	emp path
- Formatted with Black
- Updated README to reflect new TEMP_DIR setting; linted
- Modified Dockerfile to strip carriage return characters from docker-entrypoint.sh script to fix building the image on Windows
- Added example docker-compose.yml config

Dockerfile

@@ -10,10 +10,10 @@ FROM python:3.8-alpine
 
 WORKDIR /app
 
-COPY Pipfile* docker-entrypoint.sh ./
+COPY Pipfile* .
 
-RUN chmod +x docker-entrypoint.sh && \
-    apk add --update ffmpeg aria2 coreutils shadow su-exec && \
+# Install dependencies
+RUN apk add --update ffmpeg aria2 coreutils shadow su-exec && \
     apk add --update --virtual .build-deps gcc g++ musl-dev && \
     pip install --no-cache-dir pipenv && \
     pipenv install --system --deploy --clear && \
@@ -23,6 +23,11 @@ RUN chmod +x docker-entrypoint.sh && \
     mkdir /.cache && chmod 777 /.cache
 
 COPY favicon ./favicon
+COPY docker-entrypoint.sh .
+
+# Use sed to strip carriage-return characters from the entrypoint script (in case building on Windows)
+RUN sed -i 's/\r$//g' docker-entrypoint.sh && chmod +x docker-entrypoint.sh
+
 COPY app ./app
 COPY --from=builder /metube/dist/metube ./ui/dist/metube
 
@@ -32,6 +37,7 @@ ENV UMASK=022
 
 ENV DOWNLOAD_DIR /downloads
 ENV STATE_DIR /downloads/.metube
+ENV TEMP_DIR /tmp
 VOLUME /downloads
 EXPOSE 8081
 CMD [ "./docker-entrypoint.sh" ]