Custom properties

You can override some default properties if your environment requires that.

Configuration file location

The configuration will be loaded from multiple locations. Properties are considered in the following order:

  1. in user's home folder. Example locations:
    Linux: /home/myuser/
    Windows: C:/Users/myuser/
    macOS: /Users/myuser/
  2. on classpath

Disabling the startup checks

checks.disable = [true|false]

Before running any containers Testcontainers will perform a set of startup checks to ensure that your environment is configured correctly. Usually they look like this:

        ℹ︎ Checking the system...
        ✔ Docker version should be at least 1.6.0
        ✔ Docker environment should have more than 2GB free disk space
        ✔ File should be mountable
        ✔ A port exposed by a docker container should be accessible

It takes a couple of seconds, but if you want to speed up your tests, you can disable the checks once you have everything configured. Add checks.disable=true to your $HOME/ to completely disable them.

Customizing images

tinyimage.container.image = alpine:3.5
Used by Testcontainers' core

vncrecorder.container.image = richnorth/vnc-recorder:latest
Used by VNC recorder in Testcontainers' Seleniun integration

ambassador.container.image = richnorth/ambassador:latest
compose.container.image = docker/compose:1.8.0
Used by Docker Compose integration

kafka.container.image = confluentinc/cp-kafka
Used by KafkaContainer

Customizing ryuk resource reaper

ryuk.container.image = The resource reaper is responsible for container removal and automatic cleanup of dead containers at JVM shutdown ryuk.container.privileged = false In some environments ryuk must be started in privileged mode to work properly (--privileged flag)

Testcontainers uses public Docker images to perform different actions like startup checks, VNC recording and others.
Some companies disallow the usage of Docker Hub, but you can override *.image properties with your own images from your private registry to workaround that.

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