Update 'Dockerfile'

Dockerfile

@@ -1,10 +1,10 @@
 # Snapraid 12.0
 FROM debian:bullseye
 
-RUN apt update && apt upgrade && \
+RUN apt update && apt upgrade
-    apt install python3 git snapraid smartmontools tzdata && \
+RUN apt install python3 git snapraid smartmontools tzdata
-    git clone https://github.com/Chronial/snapraid-runner.git /app/snapraid-runner && \
+RUN git clone https://github.com/Chronial/snapraid-runner.git /app/snapraid-runner
-    chmod +x /app/snapraid-runner/snapraid-runner.py
+RUN chmod +x /app/snapraid-runner/snapraid-runner.py
 
 RUN echo '0 3 * * * /usr/bin/python3 /app/snapraid-runner/snapraid-runner.py -c /config/snapraid-runner.conf' > /etc/crontabs/root