add g++

Author: gxthrj

dockerfiles/Dockerfile.apisix-base.apk

@@ -46,7 +46,8 @@ RUN apk add --no-cache --virtual .build-deps \
         git \
         sudo \
         curl \
-        build-base
+        build-base \
+        g++
 
 RUN cd /tmp \
     && if [ -n "${RESTY_EVAL_PRE_CONFIGURE}" ]; then eval $(echo ${RESTY_EVAL_PRE_CONFIGURE}); fi \