Comment by saulr

Worth noting that Hadolint[1] raises warnings the issues mentioned in the article. Some examples of warnings:

- https://github.com/hadolint/hadolint/wiki/DL3007: Using latest is prone to errors if the image will ever update. Pin the version explicitly to a release tag. - https://github.com/hadolint/hadolint/wiki/DL3013: Pin versions in pip. - https://github.com/hadolint/hadolint/wiki/DL3018: Pin versions in apk add.

[1] https://github.com/hadolint/hadolint