FEAT: Docker image for JHOVE

[carlwilson]

• three stage build:
  1. Build JHOVE application
  2. Build minimal JRE using jlink
  3. Create JHOVE image from build results
• documentation in DOCKER.md.

[codecov[bot]]

Codecov Report

Base: 46.32% // Head: 46.32% // No change to project coverage :thumbsup:

Coverage data is based on head (9b0020d) compared to base (3500719). Patch has no changes to coverable lines.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## integration #795 +/- ## ============================================== Coverage 46.32% 46.32% Complexity 1053 1053 ============================================== Files 57 57 Lines 9079 9079 Branches 1609 1609 ============================================== Hits 4206 4206 Misses 4335 4335 Partials 538 538 ``` Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openpreserve). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openpreserve)

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