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kernels: Add script to convert CentOS kernels
We only convert CentOS 7 kernels for now. CentOS 6 is too old for most of our purposes. Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
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scripts/kernels/Dockerfile.rpm
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scripts/kernels/Dockerfile.rpm
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FROM alpine:3.5 AS extract
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ARG RPM_URLS
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RUN apk add --no-cache curl rpm tar && true
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WORKDIR /rpm
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RUN mkdir extract
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RUN for url in ${RPM_URLS}; do \
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echo "Extracting: $url"; \
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curl -fsSL -o dl.rpm $url && \
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rpm2cpio dl.rpm | cpio -idm ;\
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done
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RUN mkdir /out
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RUN cp -a boot/vmlinuz-* /out/kernel
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RUN cp -a boot/config-* /out/kernel_config
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RUN cp -a boot/System.map-* /out/System.map
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RUN tar cf /out/kernel.tar lib
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RUN tar cf /out/kernel-dev.tar usr || true
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FROM linuxkit/toybox-media:d7e82a7d19ccc84c9071fa7a88ecaa58ae958f7c@sha256:4c7d25f2be2429cd08417c36e04161cb924e46f3e419ee33a0aa9ff3a0942e02
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WORKDIR /
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ENTRYPOINT []
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CMD []
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COPY --from=extract /out/* /
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scripts/kernels/centos.sh
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scripts/kernels/centos.sh
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#! /bin/sh
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REPO="linuxkit/kernel-centos"
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BASE_URL=http://mirror.centos.org/centos/
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TAGS=$(curl --silent -f -lSL https://registry.hub.docker.com/v1/repositories/${REPO}/tags)
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LINKS=$(curl -s ${BASE_URL}/ | sed -n 's/.*href="\([^"]*\).*/\1/p')
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# Just get names for Centos 7
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RELEASES=$(echo $LINKS | grep -o "7\.[^ ]*")
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RELEASES="7/ $RELEASES"
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# Add updates
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URLS=""
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for RELEASE in $RELEASES; do
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URLS="$URLS ${BASE_URL}/${RELEASE}/os/x86_64/Packages/"
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done
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URLS="$URLS ${BASE_URL}/7/updates/x86_64/Packages/"
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for URL in $URLS; do
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PACKAGES=$(curl -s ${URL}/ | sed -n 's/.*href="\([^"]*\).*/\1/p')
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KERNEL_RPMS=$(echo $PACKAGES | \
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grep -o "kernel-[0-9]\+\.[0-9]\+\.[0-9]\+-[0-9]\+\.[^ ]\+\.rpm")
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for KERNEL_RPM in $KERNEL_RPMS; do
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RPM_URLS="${URL}/${KERNEL_RPM}"
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VERSION=$(echo $KERNEL_RPM | \
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grep -o "[0-9]\+\.[0-9]\+\.[0-9]\+-[0-9\.]\+\.el[0-9]\+")
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if echo $TAGS | grep -q "\"${VERSION}\""; then
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echo "${REPO}:${VERSION} exists"
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continue
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fi
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# Don't pull in the headers. This is mostly for testing
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# HEADERS_RPM="kernel-headers-${VERSION}.x86_64.rpm"
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# RPM_URLS="${RPM_URLS} ${URL}/${HEADERS_RPM}"
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docker build -t ${REPO}:${VERSION} -f Dockerfile.rpm --no-cache \
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--build-arg RPM_URLS="${RPM_URLS}" . &&
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DOCKER_CONTENT_TRUST=1 docker push ${REPO}:${VERSION}
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done
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done
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