feat: Auth config for build images

[paulozenida]

This PR allows for the feature reported in the following issue: #601

[mdelapenya]

@paulozenida I saw the PR is failing the TestDockerCreateContainerWithDirs test because here

testcontainers-go/docker_test.go

Line 2566 in dd2248a

srcBytes, err := ioutil.ReadFile(filepath.Join(hostFilePath, srcFile.Name()))

the existing code is not controlling that a directory could exist under testresources. At the moment you added the registry dirs, that test fails, and I think it should be fixed in this PR.

I'd say that simply checking the current srcFile is not a directory, and then read it would be enough. Could you include it in this PR?

Thanks!

[paulozenida]

Sure. I've just included the suggested change.

[mdelapenya]

Sure. I've just included the suggested change.

To avoid causing you more trouble in the pingpong review on failed tests, I added a commit with the same fix in another test: TestTarDir. Hopefully this will PASS 🤞

[mdelapenya]

Great job @paulozenida in this PR!

I'm updating the branch with current main. Once the CI passes, I'll merge it 🚀

BTW; the project is missing the same mechanism for pulling images from private registries in other places. As you already contributed this part for the FromDockerfile part, I wonder if you would be interested in contributing the others, such as the Docker Compose code. I can be of any help assisting you identifying where to add it. Please let me know if you'd like to participate.

[paulozenida]

Great job @paulozenida in this PR!

I'm updating the branch with current main. Once the CI passes, I'll merge it 🚀

BTW; the project is missing the same mechanism for pulling images from private registries in other places. As you already contributed this part for the FromDockerfile part, I wonder if you would be interested in contributing the others, such as the Docker Compose code. I can be of any help assisting you identifying where to add it. Please let me know if you'd like to participate.

Thank @mdelapenya.

I'm not sure I'll be able to do that right now but if you open an issue explaining the details, I might try to get to it next week or try to find someone in my organisation/team that can try to do so.