chore: Remove ubuntu-20.04 Dockerfile as its CMake is too old

diff --git a/dockerfiles/ubuntu-20.04/Dockerfile b/dockerfiles/ubuntu-20.04/Dockerfile
deleted file mode 100644 (file)
index 3c2cebf..0000000
--- a/dockerfiles/ubuntu-20.04/Dockerfile
+++ /dev/null
@@ -1,26 +0,0 @@
-ARG BASE_IMAGE=ubuntu:20.04
-FROM ${BASE_IMAGE} AS build
-
-# Non-interactive: do not set up timezone settings.
-ARG GCC_APT="gcc-multilib"
-RUN apt-get update \
- && DEBIAN_FRONTEND="noninteractive" apt-get install -y --no-install-recommends \
-        asciidoctor \
-        bash \
-        build-essential \
-        ccache \
-        clang \
-        cmake \
-        docbook-xml \
-        docbook-xsl \
-        elfutils \
-        ${GCC_APT} \
-        libhiredis-dev \
-        libzstd-dev \
-        python3 \
-        redis-server \
-        redis-tools \
- && rm -rf /var/lib/apt/lists/*
-
-# Redirect all compilers to ccache.
-RUN for t in gcc g++ cc c++ clang clang++; do ln -vs /usr/bin/ccache /usr/local/bin/$t; done

diff --git a/misc/test-some-systems b/misc/test-some-systems
index eb39574d94162f07d3fae68a0dc34d2e44d0d665..9c4bf92cfe73ba78cd904ca7b4b84bc1918b4068 100755 (executable)
--- a/misc/test-some-systems
+++ b/misc/test-some-systems
@@ -48,9 +48,6 @@ build debian-12    clang  clang++ clang   -D DEPS=DOWNLOAD
 build fedora-42    gcc    g++     gcc     -D DEPS=DOWNLOAD
 build fedora-42    clang  clang++ clang   -D DEPS=DOWNLOAD -D ENABLE_TESTING=OFF # doctest issue #900
 
-build ubuntu-20.04 gcc    g++     gcc     -D DEPS=DOWNLOAD
-build ubuntu-20.04 clang  clang++ clang   -D DEPS=DOWNLOAD
-
 build ubuntu-22.04 gcc-11 g++-11  gcc     -D DEPS=DOWNLOAD
 build ubuntu-22.04 gcc-12 g++-12  gcc     -D DEPS=DOWNLOAD
 build ubuntu-22.04 clang  clang++ clang   -D DEPS=DOWNLOAD