APK module version out of sync in Dockerfile

[taz77]

Docker builds no longer work due to change in apk module version numbering.

This pull request makes the following changes:

• Update Dockerfile variable cc @DarthHater @bhamail

[sonatypecla[bot]]

Thanks for the contribution! Before we can merge this, we need @taz77 to sign the Sonatype Contributor License Agreement.