Well, since you mentioned Docker: echo Z3JlZ0Bhc3NldG1hcHBpbmcuY29tCg== | docker run -i busybox base64 -d Edit: Yes, I'm piping your email address through

Well, since you mentioned Docker: echo Z3JlZ0Bhc3NldG1hcHBpbmcuY29tCg== | docker run -i busybox base64 -d Edit: Yes, I'm piping your email address through an operating system image I just downloaded from the internet and, to be honest, I feel quite badly about this. :(