“1. A clear mental model for why container isolation and shared libraries don’t mix as well as most teams assume
2. A step-by-step Dockerfile walkthrough — multi-stage build, `FROM scratch`, three open source tools, one image under 30 MB
3. Practical instincts for when to go fully static, when a middle-ground approach makes sense, and the one case where dynamic linking still genuinely wins
4. A way to think about service boundaries that avoids both the monolith trap and the “”too many tiny services”” trap”