perf(ci): ci-base 镜像预装 ffmpeg——消除 unit-tests 每次 24min apt 安装

unit-tests job 跑在全新容器里，ci-base 镜像未预装 ffmpeg， step_install_ffmpeg.sh 每次都 apt-get update + install ffmpeg， ffmpeg 拉取 x264/aom/systemd 等数百个编解码依赖，固定耗时约 24 分钟， pytest 本身 21-23 分钟，导致该 job 每次 45-50 分钟。把 ffmpeg 预装到 ci-base 镜像后，step_install_ffmpeg.sh 检测到 ffmpeg 已存在会立即退出（exit 0），unit-tests 直接省掉 ~24 分钟。注：ci-base 镜像需重建并推送 registry 后生效。
2026-08-31 23:54:22 +08:00
parent bc9df316dc
commit adcfc1e919
1 changed files with 8 additions and 0 deletions
@@ -30,6 +30,14 @@ RUN apt-get update \
    && apt-get install -y --no-install-recommends docker-ce-cli docker-buildx-plugin \
    && rm -rf /var/lib/apt/lists/*

+# Pre-bake ffmpeg: unit-tests run in fresh containers each time; installing ffmpeg
+# on every job cost ~24 min (apt update + hundreds of codec deps). Bake it into the
+# image so step_install_ffmpeg.sh detects it and exits instantly.
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends ffmpeg \
+    && ffmpeg -version | head -1 \
+    && rm -rf /var/lib/apt/lists/*
+
 # Pre-install base deps (layer cache)
 COPY requirements-base.txt ./
 RUN python -m venv "$VIRTUAL_ENV" \