[idea] Docker 08/14: audio.cpp in the image #2108

Which part? Desktop app

What would you like?

Step 8 of 14 of #2100: running SurfSense in Docker. Depends on #2107; start once it is merged.

Podcasts in Docker.

Design: Docker proposal, The image

What to change

• Run the desktop's audio.cpp staging (electron/scripts/audiocpp/) for Linux amd64 and arm64 in the runtimes stage, eSpeak included.
• Bundle the default voice as the desktop does, and set the audio variables in the headless context.

Done when

• Generate a podcast with the bundled voice.
• audiocpp starts only once audio/server.json names a model, and restarts when it changes.

Scope: code and tests only. Don't edit docs/ or AGENTS.md, except to fix a link this change breaks; the maintainers update the docs when the Docker work ships.

Why would it help?

Each step leaves something that runs, so the Docker image is built and reviewed one piece at a time.