Minimal squid.conf to deny destination host

squid.conf

1) create a file squid.conf
```
acl denydomain dstdomain .bbc.com
http_access deny denydomain

acl allowdomain dstdomain .yahoo.com
http_access allow allowdomain

http_access deny all

http_port 3128
access_log /apps/squid/var/logs/access.log squid
cache_log /apps/squid/var/logs/cache.log squid
```

2) then run the squid-proxy image i setup and reference the file via volume:
# docker run -v `pwd`:/tmp/squid/ -p 3128:3128 -t salrashid123/squidproxy /apps/squid/sbin/squid  -NsY -f /tmp/squid/squid.conf