getContainerConfig() is null when docker storage is overlayfs

[lancechant]

Describe the bug
With new fresh installs of docker, the new storage default is overlayfs, instead of the deprecated overlay2 source This causes getContainerConfig to throw a null pointer exception

To Reproduce
Freshly install the latest docker version, and try run intergration tests with microshed, this causes the null pointer to happen, updating the docker daemon.json at /etc/docker/daemon.json with

{
    "storage-driver": "overlay2",
    "features": {
      "containerd-snapshotter": false
    }
  }

Allows it to use the old storage, and enables the IT's to work again

Expected behavior
For it to not throw a null pointer when using newer versions of docker storage

System information:

• OS: [Windows, WSL(Ubuntu)]
• Java Version: [11, 17]
• MicroShed Testing Version: [e.g. 0.9.2]

Additional context
From my research an option is to swap from getContainerConfig to getConfig should work, but unsure, happy to test if there is a beta release to confirm

[KyleAure]

@lancechant Can you provide the error message and stack trace you are getting?
Would be helpful to know where this error is occuring. I can only find one place where Microshed calls getContainerConfig(), which could be fixed, but if this is a bug in docker-java we might want to report it there as well.

[lancechant]

Hey @KyleAure

Here is the stack trace

java.lang.ExceptionInInitializerError
        at java.base/java.lang.Class.forName0(Native Method)
        at java.base/java.lang.Class.forName(Class.java:377)
        at org.microshed.testing.jupiter.MicroShedTestExtension.beforeAll(MicroShedTestExtension.java:64)
        at org.microshed.testing.jupiter.MicroShedTestExtension.beforeAll(MicroShedTestExtension.java:58)
        at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
Caused by: java.lang.NullPointerException: Cannot invoke "com.github.dockerjava.api.model.ContainerConfig.getExposedPorts()" because the return value of "com.github.dockerjava.api.command.InspectImageResponse.getContainerConfig()" is null
        at org.microshed.testing.testcontainers.ApplicationContainer$DefaultServerAdapter.<init>(ApplicationContainer.java:665)
        at org.microshed.testing.testcontainers.ApplicationContainer.lambda$commonInit$5(ApplicationContainer.java:229)
        at java.base/java.util.Optional.orElseGet(Optional.java:364)
        at org.microshed.testing.testcontainers.ApplicationContainer.commonInit(ApplicationContainer.java:229)
        at org.microshed.testing.testcontainers.ApplicationContainer.<init>(ApplicationContainer.java:225)

Wasn't sure if it's a bug with them, as they do have the two different function call types so it might be catered there already?