This Docker image helps you start your own Squid proxy server, with HTTP Basic authorization. You may need this if you want your crawling/scaping software to look like constantly going to the Network from the same IP address. You rent a VPS, start a Squid server there and configure your software to go everywhere through an explicit HTTP(S) proxy.

When Docker is installed, run this:

$ docker run --name proxy --detach --restart=always --publish 8081:3128 \
  --env USERNAME=jeffrey --env PASSWORD=swordfish \
  yegor256/squid-proxy

Now you can connect to localhost:8081 with jeffrey:swordfish credentials.

BTW, the proxy is anonymous. Once it's up and running, you can check whether it's visible, here. It also doesn't store any logs and doesn't cache any content.