Clear answers, no fluff.

You edit .env, restart the container, and the old value is still there - no error anywhere. The exact precedence order between env_file, environment, and your shell, reproduced on a real stack, plus the fix when Compose won't pick up the change.

Every password manager says it: "zero-knowledge." Here is what that actually means technically, how client-side key derivation works, and a 5-point checklist to verify any vendor is claim for yourself.

Duplicate keys, mixed env syntax, unquoted booleans - none of them throw an error. A structural walkthrough of docker-compose.yml with YAML anchors to cut repetition and the docker compose config habit that catches mistakes before they reach a running container.

A new phone demanded a Google Password Manager PIN before your logins synced. Here's exactly what it protects, what it doesn't, and what happens if you lose it.

depends_on orders container starts, not readiness — Postgres can still be mid-recovery seconds after its container 'started'. Real log timestamps proving the gap, plus the condition: service_healthy fix that closes it.

A README lists 40-plus Docker Compose subcommands. In practice, running several stacks on one homelab host means using about eight of them daily, plus one gotcha: pull, logs, restart, and exec all scope to a single service if you name one.

Every Compose stack you copy from a README defaults to the same handful of ports. Here is how host vs container ports actually work, why multi-stack homelabs collide, and when to add a reverse proxy instead of publishing ports directly.

You ran docker-compose up -d on a box where that exact command has worked a dozen times before - or a Pi you just flashed, or a Synology you just rebooted - and the shell answers docker-compose: command not found. Docker itself is clearly installed; docker ps works fine. So what broke?

Bitdefender SecurePass, Kaspersky, and Norton all bundle a password manager into their antivirus suite — here is what each one actually includes, and skips, versus Bitwarden.