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fix(frontend): bind Next to 0.0.0.0 so healthcheck passes (unhealthy fix) #1075

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bot-backend merged 1 commit from fix/frontend-healthcheck-hostname into main 2026-06-06 15:07:10 +00:00
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frontend/Dockerfile
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@ -27,9 +27,15 @@ RUN npm run build
# ---- runner ----
FROM node:20-alpine AS runner
WORKDIR /app
# Next.js standalone server.js binds to `process.env.HOSTNAME || '0.0.0.0'`.
# Docker auto-sets HOSTNAME to the container id, so without this the server binds
# that hostname and the compose healthcheck (TCP 127.0.0.1:3000) is refused →
# container shows "(unhealthy)" although it serves fine via Caddy (service name).
# Pin 0.0.0.0 so it listens on all interfaces and the healthcheck connects.
ENV NODE_ENV=production \
NEXT_TELEMETRY_DISABLED=1 \
PORT=3000
PORT=3000 \
HOSTNAME=0.0.0.0
# `node` user (uid 1000) ships with the alpine image.
COPY --from=builder --chown=node:node /app/public ./public