install zlib on the x86_64-gnu image
@@ -19,7 +19,8 @@ RUN apt-get purge --auto-remove -y cmake && \
COPY openssl.sh /
RUN apt-get install -y --no-install-recommends \
- g++ && \
+ g++ \
+ zlib1g-dev && \
bash /openssl.sh 1.0.2j linux-x86_64
ENV OPENSSL_DIR=/openssl
