41 lines
1.6 KiB
Bash
Executable File
41 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
|
|
# Frontend container entrypoint (#521).
|
|
#
|
|
# Renders /usr/share/nginx/html/index.html from a build-time .tpl
|
|
# snapshot, substituting BRAND_TITLE / BRAND_DESCRIPTION env vars into
|
|
# the static HTML head. This is what self-hosters running the pre-built
|
|
# GHCR image use to brand their link-preview fallback — see the matching
|
|
# comment in frontend/index.html for the three-path architecture
|
|
# (per-event OG endpoint, crawler-detected SPA shell, and this static
|
|
# fallback that catches WhatsApp Business / Twilio / LinkPreview).
|
|
#
|
|
# Re-runs on every container start. The .tpl is the immutable source so
|
|
# changing BRAND_TITLE in compose env and `docker compose up -d frontend`
|
|
# is enough — no rebuild required.
|
|
#
|
|
# Locked to BRAND_TITLE + BRAND_DESCRIPTION explicitly (rather than
|
|
# letting envsubst expand every ${...} it finds) so the JS bundle's
|
|
# template literals in /assets/*.js stay untouched if anyone ever
|
|
# accidentally points the substitution at them.
|
|
set -eu
|
|
|
|
: "${BRAND_TITLE:=PicPeak}"
|
|
: "${BRAND_DESCRIPTION:=Photo gallery shared with PicPeak.}"
|
|
|
|
export BRAND_TITLE BRAND_DESCRIPTION
|
|
|
|
TEMPLATE=/usr/share/nginx/html/index.html.tpl
|
|
RENDERED=/usr/share/nginx/html/index.html
|
|
|
|
if [ -f "$TEMPLATE" ]; then
|
|
envsubst '${BRAND_TITLE} ${BRAND_DESCRIPTION}' < "$TEMPLATE" > "$RENDERED"
|
|
else
|
|
# Template missing — image build skipped the .tpl rename for some
|
|
# reason. Don't crash: nginx can still serve whatever is at
|
|
# $RENDERED (probably the unsubstituted output of `npm run build`).
|
|
# Log loudly so it's visible during boot.
|
|
echo "[frontend-entrypoint] WARN: $TEMPLATE missing; serving $RENDERED as-is." >&2
|
|
fi
|
|
|
|
exec "$@"
|