travis: build criu and run tests on centos

It is one of our target platforms.

Cc: Adrian Reber <areber@redhat.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Acked-by: Adrian Reber <areber@redhat.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

.travis.yml

@@ -23,6 +23,7 @@ env:
   - TR_ARCH=fedora-rawhide
   - TR_ARCH=fedora-rawhide-aarch64
   - TR_ARCH=local       GCOV=1
+  - TR_ARCH=centos
 matrix:
   allow_failures:
     - env: TR_ARCH=docker-test

scripts/build/Dockerfile.centos

+FROM centos:7
+
+ARG CC=gcc
+ARG ENV1=FOOBAR
+
+RUN yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
+RUN yum install -y \
+	ccache \
+	findutils \
+	gcc \
+	git \
+	iproute \
+	iptables \
+	libaio-devel \
+	libasan \
+	libcap-devel \
+	libnet-devel \
+	libnl3-devel \
+	make \
+	procps-ng \
+	protobuf-c-devel \
+	protobuf-devel \
+	protobuf-python \
+	python \
+	python-ipaddr \
+	python-yaml \
+	tar
+
+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
+RUN make -C test/zdtm -j $(nproc)

scripts/build/Makefile

 QEMU_ARCHES := armv7hf aarch64 ppc64le s390x fedora-rawhide-aarch64 # require qemu
-ARCHES := $(QEMU_ARCHES) x86_64 fedora-asan fedora-rawhide
+ARCHES := $(QEMU_ARCHES) x86_64 fedora-asan fedora-rawhide centos
 TARGETS := $(ARCHES) alpine
 TARGETS_CLANG := $(addsuffix $(TARGETS),-clang)
 

scripts/travis/Makefile

@@ -11,7 +11,7 @@ ifdef CLANG
 	target-suffix = -clang
 endif
 
-TARGETS := fedora-asan alpine fedora-rawhide
+TARGETS := fedora-asan alpine fedora-rawhide centos
 ZDTM_OPTIONS :=
 
 alpine: ZDTM_OPTIONS=-x zdtm/static/binfmt_misc -x zdtm/static/netns-nf -x zdtm/static/sched_policy00 -x zdtm/static/seccomp_strict -x zdtm/static/sigaltstack -x zdtm/static/signalfd00 -x zdtm/static/config_inotify_irmap