My personal laptop, my beloved Dell XPS 15, broke down. The SSD was not being detected. Fixing it would take time and I thought I鈥檇 get it fixed when I less workload. Now as part of my work, I need to connect to a VPN. The VPN solution is Palo Alto鈥檚 GlobalProtect VPN 馃槄 (I鈥檒l rant about GlobalProtect VPN some other time!). I can only connect to the VPN using my Dell XPS as it鈥檚 MAC address was registered....
I have a few files that I want to push to a remote repository just before shutdown. It could be many use cases, but mine is, I want my dotfiles synced to mbtamuli/dotfiles. Well, the approach is simple setup a small script to do git push have a systemd service What? You thought there鈥檇 be a ton of steps? Sorry to dissapoint. 馃榿 profit! 馃槑 Create another file and do whatever you need /usr/local/bin/backup_work....
I came across this really neat Docker image docker-postfix. It got me up and running with Postfix in a very short amount of time. I鈥檓 just mentioning the extra steps I had to take to get the TLS certificates and the DKIM keys. As this is a post of configuring Postfix running as a Docker container, I鈥檒l also run all the setup steps inside containers. First let鈥檚 create a directory for all our files and pull all the images...
Postfix is a service which forks itself and runs in the background. Postfix version 3.3.0 added container support. There was an issue where Postfix could not run as PID=1, and it was swiftly fixed in version 3.3.1 As I could not find any official Docker image for the latest versin of Postfix, I decided to build one myself. At the time I built the image, there was no Debian package available so I had to compile the package from source....