Fix syntax error in Dockerfile

Author: Tesla

Dockerfile

@@ -16,7 +16,7 @@ RUN apt-get update && apt-get install -y apt-utils curl sudo systemd xxd lsof ga
     rm -rf /opt/hiddify-manager/ssl && \
     ln -sf /hiddify-data/ssl /opt/hiddify-manager/ssl
 
-RUN bash install.sh install-docker --no-gui &&\
+RUN bash install.sh install-docker --no-gui
 RUN rm -rf /var/cache/apt/archives /var/lib/apt/lists/*
 
 COPY other/docker/ /usr/bin/