Update Dockerfile

Dockerfile

@@ -10,10 +10,11 @@ RUN apt-get update && \
     rm -rf /var/lib/apt/lists/*
 
 # Create user and set permissions
-RUN adduser -D -H -s /bin/bash searx && \
+RUN adduser --gecos "" searx && \
     mkdir -p /usr/local/searx && \
     chown searx:searx /usr/local/searx
 
+USER searx
 # Clone searx repository
 RUN git clone https://github.com/searx/searx.git /usr/local/searx/searx-src