Update base Docker image to Alpine 3.17

* Python version is unchanged 3.10.8
* This issue is fixed https://github.com/searxng/searxng-docker/issues/31

Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.16
+FROM alpine:3.17
 ENTRYPOINT ["/sbin/tini","--","/usr/local/searxng/dockerfiles/docker-entrypoint.sh"]
 EXPOSE 8080
 VOLUME /etc/searxng
@@ -19,7 +19,6 @@ ENV INSTANCE_NAME=searxng \
 
 WORKDIR /usr/local/searxng
 
-
 COPY requirements.txt ./requirements.txt
 
 RUN apk upgrade --no-cache \