Update Dockerfile

Dockerfile

@@ -24,13 +24,9 @@ ENV PYTHONUNBUFFERED=1
 ENV PORT=8080
 EXPOSE 8080
 
-#prepare non-root user
-RUN useradd -m -u 1000 user
-USER user
-ENV HOME=/home/user \
-	PATH=/home/user/.local/bin:$PATH
-
-WORKDIR $HOME/app
+# Prepare a non-root user
+RUN adduser --system worker
+WORKDIR /home/worker/app
 
 RUN mkdir local_data; chown worker local_data
 RUN mkdir models; chown worker models