Deploy IFT: optional observer-web/logrotate, bootstrap build on IFT server.

Co-authored-by: Cursor <cursoragent@cursor.com>

docker/logrotate/Dockerfile

@@ -1,5 +1,8 @@
 FROM alpine:latest
-RUN apk add --no-cache logrotate dcron tzdata
+RUN for i in 1 2 3 4 5; do \
+      apk add --no-cache logrotate dcron tzdata && break; \
+      echo "apk retry $i/5..."; sleep 15; \
+    done
 COPY logrotate.conf /etc/logrotate.conf
 COPY entrypoint.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh