Update 2 files

- /squid/run.sh
- /Dockerfile

Dockerfile

@@ -98,7 +98,7 @@ RUN adduser --no-create-home --uid 1161 --group --system squid \
     && echo "access_log stdio:/var/log/squid/access.log" >> /etc/squid/squid.conf \
     && echo "cache_log /var/log/squid/cache.log" >> /etc/squid/squid.conf \
     && echo "cache_effective_user squid" >> /etc/squid/squid.conf \
-    && echo "pid_filename /run/squid.pid" >> /etc/squid/squid.conf \
+    && echo "pid_filename /var/run/squid.pid" >> /etc/squid/squid.conf \
 # Removed in 5.8, needed for test
 	&& sed  -i '/http_access deny all/ihttp_access allow localnet' /etc/squid/squid.conf \
 # Packages dependencies installation for running and clean again