Docker: install zlib

Author: mpartel

Dockerfile

@@ -1,7 +1,7 @@
 FROM ubuntu:18.04
 
 RUN apt-get update \
- && apt-get install -y curl gnupg2 \
+ && apt-get install -y curl gnupg2 zlib1g-dev \
  && echo "deb http://apt.postgresql.org/pub/repos/apt/ bionic-pgdg main" > /etc/apt/sources.list.d/pgdg.list \
  && curl -sL https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add - \
  && apt-get update \