ci: add CentOS 8 based CI run

Our CentOS based CI run is based on CentOS 7. CentOS 8 exists already
for some time and CentOS 7 will probably go end of life at some point.

This adds a CentOS 8 based CI run to be prepared for the time CentOS 7
goes away.

Signed-off-by: Adrian Reber <areber@redhat.com>

.github/workflows/centos-test.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        target: [centos7]
+        target: [centos7, centos8]
 
     steps:
     - uses: actions/checkout@v2

scripts/build/Dockerfile.centos8

@@ -0,0 +1,56 @@
+FROM registry.centos.org/centos/centos:8
+
+ARG CC=gcc
+ARG ENV1=FOOBAR
+
+RUN yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm dnf-plugins-core
+RUN yum config-manager --set-enabled PowerTools
+RUN yum install -y --allowerasing \
+	asciidoc \
+	ccache \
+	coreutils \
+	chkconfig \
+	diffutils \
+	findutils \
+	gcc \
+	git \
+	gnutls-devel \
+	iproute \
+	iptables \
+	libaio-devel \
+	libasan \
+	libcap-devel \
+	libnet-devel \
+	libnl3-devel \
+	libselinux-devel \
+	make \
+	procps-ng \
+	protobuf-c-devel \
+	protobuf-devel \
+	python3-devel \
+	python3-flake8 \
+	python3-PyYAML \
+	python3-future \
+	python3-protobuf \
+	python3-pip \
+	sudo \
+	tar \
+	which \
+	xmlto
+
+RUN alternatives --set python /usr/bin/python3
+ENV PYTHON=python3
+
+COPY . /criu
+WORKDIR /criu
+
+ENV CCACHE_DIR=/tmp/.ccache CCACHE_NOCOMPRESS=1 $ENV1=yes
+RUN mv .ccache /tmp && make mrproper && ccache -sz  && \
+	date && make -j $(nproc) CC="$CC" && date && ccache -s
+
+# The rpc test cases are running as user #1000, let's add the user
+RUN adduser -u 1000 test
+
+RUN pip3 install junit_xml
+
+RUN make -C test/zdtm -j $(nproc)

scripts/build/Makefile

@@ -1,4 +1,4 @@
-ARCHES := x86_64 fedora-asan fedora-rawhide centos7 armv7hf
+ARCHES := x86_64 fedora-asan fedora-rawhide centos7 armv7hf centos8
 TARGETS := $(ARCHES) alpine
 TARGETS_CLANG := $(addsuffix $(TARGETS),-clang)
 CONTAINER_RUNTIME := docker

scripts/ci/Makefile

@@ -11,7 +11,7 @@ ifdef CLANG
 	target-suffix = -clang
 endif
 
-TARGETS := alpine fedora-rawhide centos7
+TARGETS := alpine fedora-rawhide centos7 centos8
 ZDTM_OPTIONS :=
 UNAME := $(shell uname -m)