FROM caddy:2.11.4-builder-alpine AS builder

# caddy-l4 natively registers the `layer4` global option used by the Caddyfile.
# Do NOT also add RussellLuo/caddy-ext/layer4: it registers the same global
# option, and building both panics with "global option 'layer4' already registered".
RUN xcaddy build \
  --with github.com/mholt/caddy-l4@bd96009ea7373869bb07d61055554f966b1f5088


FROM caddy:2.11.4-alpine

COPY --from=builder /usr/bin/caddy /usr/bin/caddy

COPY caddy-compat-normalize.awk /usr/local/lib/caddy-compat/normalize.awk
COPY entrypoint-caddy.sh /usr/local/bin/entrypoint-caddy.sh
RUN chmod +x /usr/local/bin/entrypoint-caddy.sh

# The base image has no ENTRYPOINT and puts `caddy` in CMD, so setting an
# ENTRYPOINT here both resets CMD (restated below) and changes what a user's
# existing `command:` override means. The entrypoint absorbs a leading `caddy`
# token so both forms keep working.
ENTRYPOINT ["/usr/local/bin/entrypoint-caddy.sh"]
CMD ["run", "--config", "/etc/caddy/Caddyfile", "--adapter", "caddyfile"]