CI: Install CMake in Ubuntu 20.04 image

diff --git a/ci/ubuntu-20.04/Dockerfile b/ci/ubuntu-20.04/Dockerfile
index d8d0b1cc4d771c80b22675f4fc1564c06de527fc..4f854b53a5ba544f3fdcc0312450226c48d55efc 100644 (file)
--- a/ci/ubuntu-20.04/Dockerfile
+++ b/ci/ubuntu-20.04/Dockerfile
@@ -8,6 +8,7 @@ RUN apt-get update -y \
 && apt-get install --no-install-recommends -y \
 # Development tools
 build-essential \
+cmake \
 git \
 pkg-config \
 autoconf \