Docker Compose: how to wait for the MySQL server container to be ready?

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  • wait-for-it

    Pure bash script to test and wait on the availability of a TCP host and port

    python:3.10.5-slim-buster is a Debian GNU/Linux 10 (buster). Follow the Debian package link given by wait-for-it, we'll eventually find this link https://packages.debian.org/source/oldoldstable/wait-for-it, I downloaded the wait-for-it_0.0~git20160501.orig.tar.gz file and extracted wait-for-it.sh out to the project root directory where setup.py, app.py, .dockerignore, Dockerfile and docker-compose.yml are.

  • Wait4X

    Wait4X allows you to wait for a port or a service to enter the requested state.

    Further Googling, I found this Docker document Control startup and shutdown order in Compose, whereby several tools are recommended to implement the waiting, among them are wait-for-it and Wait4X.

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    Build time-series-based applications quickly and at scale.. InfluxDB is the Time Series Platform where developers build real-time applications for analytics, IoT and cloud-native services. Easy to start, it is available in the cloud or on-premises.

  • Docker Compose

    Define and run multi-container applications with Docker

    https://docs.docker.com/compose/ -- an overview of Compose.

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