diff --git a/Dockerfile-debian b/Dockerfile-debian
index 50883e0..9caf2a6 100644
--- a/Dockerfile-debian
+++ b/Dockerfile-debian
@@ -23,8 +23,10 @@ ARG _sysconfdir=/etc
 ARG _sbindir=/usr/local/sbin
 
 ARG TEST_NGINX_VERSION=0.26
-# Docker Build Arguments
-ARG RESTY_VERSION="1.21.4.2"
+
+ARG NGINX_UPSTREAM_CHECK_MODULE_VERSION="0.4.0"
+ARG NGINX_VERSION="1.21.4"
+ARG RESTY_VERSION="${NGINX_VERSION}.2"
 ARG RESTY_LUAROCKS_VERSION="3.9.2"
 
 # !!! Do not upgrade RESTY_OPENSSL_VERSION to "3.1.3". It will break the reload with OOM error. Other versions have not been tested.
@@ -94,9 +96,14 @@ RUN cd /tmp \
 RUN cd /tmp \
     && curl -fSLk https://openresty.org/download/openresty-${RESTY_VERSION}.tar.gz -o openresty-${RESTY_VERSION}.tar.gz \
     && tar xzf openresty-${RESTY_VERSION}.tar.gz \
-    && cd openresty-${RESTY_VERSION} \
+    && cd openresty-${RESTY_VERSION}/bundle/nginx-${NGINX_VERSION} \
+    && curl -fSLk https://github.com/yaoweibin/nginx_upstream_check_module/archive/refs/tags/v${NGINX_UPSTREAM_CHECK_MODULE_VERSION}.tar.gz -o nginx_upstream_check_module-${NGINX_UPSTREAM_CHECK_MODULE_VERSION}.tar.gz \
+    && tar xzf nginx_upstream_check_module-${NGINX_UPSTREAM_CHECK_MODULE_VERSION}.tar.gz \
+    && patch -p1 < nginx_upstream_check_module-${NGINX_UPSTREAM_CHECK_MODULE_VERSION}/check_1.20.1+.patch \
+    && cd /tmp/openresty-${RESTY_VERSION} \
     && readonly NPROC=$(grep -c ^processor /proc/cpuinfo 2>/dev/null || 1) \
     && ./configure -j${NPROC} ${_RESTY_CONFIG_DEPS} ${RESTY_CONFIG_OPTIONS} ${RESTY_CONFIG_OPTIONS_MORE} \
+        --add-module=/tmp/openresty-${RESTY_VERSION}/bundle/nginx-${NGINX_VERSION}/nginx_upstream_check_module-${NGINX_UPSTREAM_CHECK_MODULE_VERSION} \
     && make -j${NPROC} \
     && make -j${NPROC} install
 
diff --git a/init.sh b/init.sh
index 6d45898..ce65218 100755
--- a/init.sh
+++ b/init.sh
@@ -26,6 +26,8 @@ log_level=${LOG_LEVEL:-warn}
 marathon_host=${MARATHON_HOST}
 sleep_duration=${MARATHON_POLL_INTERVAL:-5}
 force_reload_interval_s=${FORCE_RELOAD_INTERVAL_S:--1}
+active_active=${ACTIVE_ACTIVE:-false}
+
 #
 # location for a remote /etc/api-gateway folder.
 # i.e s3://api-gateway-config
@@ -123,4 +125,4 @@ else
 fi
 
 echo "   ... using log level: '${log_level}'. Override it with -e 'LOG_LEVEL=<level>' "
-sudo api-gateway -p /usr/local/api-gateway/ -c /etc/api-gateway/api-gateway.conf -g "daemon off; error_log /dev/stderr ${log_level};"
+sudo -E api-gateway -p /usr/local/api-gateway/ -c /etc/api-gateway/api-gateway.conf -g "daemon off; error_log /dev/stderr ${log_level}; env ACTIVE_ACTIVE=${active_active};"