progress and output from docker build?

[mikeblas]

Some of my images take a while to build, particularly if the cache is empty/cold. If I do an actual docker build command line, they generate output while building and that's comforting.

Is it possible to catch that output when using TestContainers? I don't see a way to do it -- seems like the only result from the build is an exception (or not). It would be great if I could catch a stream from docker build --progress=plain, but I just don't see a way to do it.

[HofmeisterAn]

The messages for building and pulling images are logged using the debug log level. You can activate debug log messages in the default logger setup by enabling ConsoleLogger.Instance.DebugLogLevelEnabled, or you can use your own custom logger by setting TestcontainersSettings.Logger that forwards the messages.

[mikeblas]

I wish I could report that worked. Logging to debug level in my logger seems to work fine, but during a long image build, I see no messages.

[mikeblas]

I ended up discovering this was supported in a newer version of the library. After upgrading, the debug log does include the image build output. I'd still rather have a listener (like the output consumers) than plumb this through the logging infrastructure.