Try building different version

povray_gcc/Dockerfile

@@ -3,6 +3,8 @@ FROM frolvlad/alpine-gxx
 RUN apk update
 
 RUN apk add --update \
+	git \
+	bash \
 	coreutils \
 	build-base \
 	boost-dev \

povray_gcc/build_with_docker.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-POVRAY_VERSION=latest-stable
+POVRAY_VERSION=3.7-stable
 
 if [ ! -d povray ]; then
 	git clone --depth 1 --branch $POVRAY_VERSION https://github.com/POV-Ray/povray povray