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Dockerfile: bust the yt-dlp nightly layer cache per commit

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CI builds with GHA layer caching (cache-from/to: gha), and the nightly RUN's
cache key is just the instruction text — the layer could pin a months-old
"nightly" across releases, silently defeating the channel's whole purpose.
Referencing COMMIT_SHA (already passed by docker-publish.yml) in the RUN makes
every new commit bust that one layer while everything above it stays cached.
This commit is contained in:
BoulderBadgeDad 2026-06-06 16:56:23 -07:00
parent 00e50c2fcb
commit c4633ada28
1 changed files with 6 additions and 1 deletions
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@ -32,7 +32,12 @@ RUN pip install --no-cache-dir --upgrade pip && \
# yt-dlp must track YouTube faster than its stable channel ships — stable can
# lag months behind a breaking YouTube change while extraction is broken
# ("Requested format is not available"). Build images with the NIGHTLY channel.
RUN pip install --no-cache-dir -U --pre "yt-dlp[default]"
# COMMIT_SHA is referenced in the RUN so CI's layer cache (cache-from: gha)
# busts on every new commit — otherwise this layer could pin a stale "nightly"
# for months, silently defeating its purpose.
ARG COMMIT_SHA=""
RUN echo "yt-dlp nightly for build ${COMMIT_SHA}" && \
pip install --no-cache-dir -U --pre "yt-dlp[default]"
# Stage 2: Runtime — only runtime dependencies, no build tools
FROM python:3.11-slim