Docker Compose Secrets: How They Really Work
You've already done the sensible thing: your database password lives in a git-ignored .env file, not hardcoded in compose.yaml. That solves the "don't commit passwords to GitHub" problem. It...
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Compose files, Dockerfiles and the mistakes between them, explained.
WordPress Docker Compose: The Complete Setup Guide
If you have moved WordPress off shared hosting before, you know the drill: unzip files over FTP, create a database, point a config file at it, and hope the permissions line up. A WordPress Docker...
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Dockerfile Multi-Stage Build: Cut Image Size Fast
Somebody on your team runs docker images and asks why a Node app that fits in a 40 MB zip file produces a 1.2 GB container. Nobody has a good answer. The Dockerfile was copied from a README months...
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Dockerfile CMD vs ENTRYPOINT: The PID 1 Difference
Your container takes ten seconds to stop every time you run docker stop, and Ctrl-C in the foreground does nothing at all. Nobody told you that the cause is a missing pair of square brackets. This...
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Docker Compose Healthcheck: Fix depends_on Race Conditions
Your compose.yaml looks correct. Postgres sits under depends_on, you run docker compose up, and the app container still dies with ECONNREFUSED 127.0.0.1:5432. Restart it and it connects fine. If...
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Docker Compose Networks and Ports: How Containers Talk
Two support tickets show up more than any others when a stack moves from a laptop to a server. The first: "my app gets connection refused talking to the database, and they're in the same...
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