# Base image PINNED to a digest. The browser fingerprint LinkedIn sees is derived # from the Chromium build below, which depends on this base. A floating tag would # let a rebuild silently pull a newer Debian + newer Chromium, changing the # fingerprint and triggering a LinkedIn forced-logout (root cause of the Jun 2026 # incident). Bump this digest only deliberately — it requires re-authenticating. FROM node:22-slim@sha256:d9f850096136edbc402debdd8729579a288aac64574ada0ff4db26b6ae58b0b2 # Chromium PINNED to an exact version for a stable browser fingerprint. # Do NOT unpin. Any Chromium change must be a conscious decision — it changes the # fingerprint and will log the LinkedIn session out (Jun 2026 incident, §15). # # We fetch Chromium from snapshot.debian.org (a frozen, immutable Debian archive) # instead of the live mirror. The live mirror only keeps the newest 1-2 Chromium # builds, so it ROTATED 149 out (and the current live build, 150.0.7871.46, is a # broken build that SIGTRAPs on launch — do not use it). The snapshot archive keeps # every version forever, so this pin builds reproducibly regardless of the live # mirror. Snapshot is served over http:// on purpose (its TLS cert isn't in the # base image's CA bundle; apt would silently fall back to the live mirror otherwise). # All three chromium packages are pinned together — chromium depends on # chromium-common/chromium-sandbox at the exact same version or apt errors. RUN echo "deb [check-valid-until=no] http://snapshot.debian.org/archive/debian/20260620T000000Z/ bookworm main" > /etc/apt/sources.list \ && echo "deb [check-valid-until=no] http://snapshot.debian.org/archive/debian-security/20260620T000000Z/ bookworm-security main" >> /etc/apt/sources.list \ && echo "Acquire::Check-Valid-Until false;" > /etc/apt/apt.conf.d/99snapshot \ && apt-get -o Acquire::Retries=3 update && apt-get install -y --no-install-recommends \ curl \ chromium=149.0.7827.155-1~deb12u1 \ chromium-common=149.0.7827.155-1~deb12u1 \ chromium-sandbox=149.0.7827.155-1~deb12u1 \ libatk-bridge2.0-0 \ libatk1.0-0 \ libcups2 \ libdbus-1-3 \ libdrm2 \ libgbm1 \ libgtk-3-0 \ libnss3 \ libxcomposite1 \ libxdamage1 \ libxfixes3 \ libxkbcommon0 \ libxrandr2 \ xdg-utils \ && rm -rf /var/lib/apt/lists/* # Tell Playwright to use the system Chromium instead of downloading its own ENV PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD=1 ENV PLAYWRIGHT_CHROMIUM_EXECUTABLE_PATH=/usr/bin/chromium WORKDIR /app COPY package*.json ./ RUN npm ci COPY . . ARG APP_VERSION=dev ENV APP_VERSION=$APP_VERSION RUN npm run build # Data directory — mount a volume here to persist the SQLite DB RUN mkdir -p /data && chown node:node /data ENV LINKI_DB_PATH=/data/linki.db USER node EXPOSE 3000 CMD ["npm", "start"]