feat: add nginx entrypoint

scripts/nginx-entrypoint.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+# nginx entrypoint for the model-platform gateway.
+#
+# Overrides the default nginx:alpine /docker-entrypoint.sh to render the
+# templated default.conf (mounted at /etc/nginx/conf.d/default.conf.template)
+# by substituting the single ${RUSTFS_ENDPOINT} placeholder, then writes
+# the result to /etc/nginx/conf.d/default.conf and execs the CMD
+# (typically `nginx -g 'daemon off;'`).
+#
+# Uses sed (busybox-safe) so no extra packages are needed.
+
+set -eu
+
+: "${RUSTFS_ENDPOINT:=http://rustfs:9000}"
+
+sed \
+    -e "s|\${RUSTFS_ENDPOINT}|${RUSTFS_ENDPOINT}|g" \
+    /etc/nginx/conf.d/default.conf.template \
+    > /etc/nginx/conf.d/default.conf
+
+exec "$@"