load optional info banner via env var

[dwinston]

Description

Supplement to microbiomedata/nmdc-server#1211

Fixes #506

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration, if it is not simply make up-test && make test-run.

Configuration Details: new env var INFO_BANNER_INNERHTML.

Checklist:

• My code follows the style guidelines of this project (have you run black nmdc_runtime/?)
• I have performed a self-review of my code

[eecavanna]

I tested several environment variable values on Rancher—letters only, letters and single quotes and double quotes, HTML wrapped in a single outermost element (i.e. everything within a single <span>...</span>), and HTML with multiple outermost elements. All of them worked the way I expected. In all of those cases, I wrote everything on a single line.

Here's the final one of those things:

<strong>Announcement:</strong> <span>The NMDC will be replacing legacy identifiers with <a href="https://microbiomedata.github.io/nmdc-schema/identifiers/#ids-minted-for-use-within-nmdc" target="_blank">NMDC persistent identifiers</a> on <strong>May 1, 2024</strong> for studies, samples, analysis workflows, and files. Additionally, annotation will be reprocessed for legacy metagenomes and metatranscriptomes, along with binning for metagenomes. Legacy metaproteomics datasets will be reprocessed using the new metagenome annotations. For information on mapping between old and new identifiers, please refer to <a href="https://microbiomedata.github.io/nmdc-schema/identifiers/#reuse-vs-minting-new-ids" target="_blank">this documentation</a>. If you have questions, please contact <a href="mailto: support@microbiomedata.org">support@microbiomedata.org</a>.</span>

Looks good to me! Thanks, @PeopleMakeCulture and @dwinston!