diff --git a/automation/build/alpine/3.12.dockerfile b/automation/build/alpine/3.12.dockerfile
index 2c02417ee6..94557e239b 100644
--- a/automation/build/alpine/3.12.dockerfile
+++ b/automation/build/alpine/3.12.dockerfile
@@ -21,6 +21,7 @@ RUN \
   apk add curl-dev && \
   apk add dev86 && \
   apk add gcc  && \
+  apk add g++ && \
   apk add clang  && \
   apk add gettext && \
   apk add git && \