Add zlib1g to builder deps

Author: Mark-Simulacrum

src/ci/docker/host-x86_64/i686-gnu-nopt/Dockerfile

@@ -11,6 +11,8 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   cmake \
   sudo \
   gdb \
+  zlib1g-dev \
+  lib32z1-dev \
   xz-utils
 
 

src/ci/docker/host-x86_64/i686-gnu/Dockerfile

@@ -11,6 +11,8 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   cmake \
   sudo \
   gdb \
+  zlib1g-dev \
+  lib32z1-dev \
   xz-utils