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#docker
images, layers, and the cache miss that just cost you twelve minutes.
2 blog posts · 2 TILs.
Blog posts
Self-hosted SimpleLogin with Docker, Postfix, and Brevo for $3/month. The TLS gotcha that ate two hours of my Sunday, written down so you skip it.
Your containers are probably insecure. Here's how I learned to harden Docker containers the hard way, and the security mistakes that almost cost us.
Today I learned
Volume mounts that look right but won't persist data. The five-command inspection sequence that always tells me which mount is actually being read.
Docker builds slow despite a clean layer order? Your .dockerignore is probably letting files bust the cache on every commit. The two-line fix.