ci: factor out Fedora Rawhide CI setup

To run Fedora Rawhide based aarch64 containers on Drone CI our current
Dockerfile setup does not work.

This moves the package installation out of the Dockerfile into
scripts/ci/prepare-for-fedora-rawhide.sh to be usable in the Dockerfile
environment and in the Drone CI environment.

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

scripts/build/Dockerfile.fedora.tmpl

@@ -1,42 +1,8 @@
 ARG CC=gcc
 ARG ENV1=FOOBAR
 
-RUN dnf install -y \
-	ccache \
-	diffutils \
-	findutils \
-	gcc \
-	git \
-	gnutls-devel \
-	gzip \
-	iproute \
-	iptables \
-	nftables \
-	nftables-devel \
-	libaio-devel \
-	libasan \
-	libcap-devel \
-	libnet-devel \
-	libnl3-devel \
-	make \
-	procps-ng \
-	protobuf-c-devel \
-	protobuf-devel \
-	python3-flake8 \
-	python3-PyYAML \
-	python3-future \
-	python3-protobuf \
-	python3-junit_xml \
-	redhat-rpm-config \
-	sudo \
-	tar \
-	which \
-	e2fsprogs \
-	rubygem-asciidoctor \
-	kmod
-
-RUN ln -sf python3 /usr/bin/python
-ENV PYTHON=python3
+COPY scripts/ci/prepare-for-fedora-rawhide.sh /bin/prepare-for-fedora-rawhide.sh
+RUN /bin/prepare-for-fedora-rawhide.sh
 
 COPY . /criu
 WORKDIR /criu
@@ -49,4 +15,3 @@ RUN mv .ccache /tmp && make mrproper && ccache -sz  && \
 RUN adduser -u 1000 test
 
 RUN make -C test/zdtm -j $(nproc)
-