deterministic OCI container build setup #1
132
Dockerfile
132
Dockerfile
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@ -1,22 +1,118 @@
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FROM ruby:3.2.2-alpine AS builder
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LABEL stage=distrust-co-builder
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RUN apk update && apk add g++ make git git-lfs
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RUN mkdir -p /home
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COPY Gemfile /home
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COPY Gemfile.lock /home
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COPY _vendor /home/_vendor
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WORKDIR /home
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ARG DEBIAN_HASH=b91baba9c2cae5edbe3b0ff50ae8f05157e3ae6f018372dcfc3aba224acb392b
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ARG BUILD_ENV=pin
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FROM debian@sha256:${DEBIAN_HASH} AS build_base
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FROM build_base AS build_pin
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ARG DEBIAN_RELEASE=bookworm
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ARG REQUIRED_PACKAGES="git ruby ruby-dev ruby-bundler media-types"
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ONBUILD RUN \
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export date=$(date +"%Y%m%dT000000Z") \
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&& export url=http://snapshot.debian.org/archive/debian \
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&& export rel=${DEBIAN_RELEASE} \
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&& echo "deb [trusted=yes] ${url}/${date} ${rel} main" \
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> apt-sources.list \
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&& echo "deb [trusted=yes] ${url}-security/${date} ${rel}-security main" \
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> apt-sources.list \
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&& echo "deb [trusted=yes] ${url}/${date} ${rel}-updates main" \
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> apt-sources.list
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ONBUILD RUN \
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apt-get update \
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&& apt-get install \
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-y \
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--download-only \
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dpkg-dev bzip2 ${REQUIRED_PACKAGES} \
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&& ( cd /var/cache/apt/archives \
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&& find . -type f \( -iname \*.deb \) -exec sha256sum {} \; \
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| sed 's/.\///g' \
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| LC_ALL=C sort \
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) > apt-hashes.list \
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&& echo "Pinned APT packages:" \
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&& cat apt-hashes.list
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ONBUILD RUN \
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for deb in /var/cache/apt/archives/*.deb; do \
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package=$(dpkg-deb -f $deb Package); \
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version=$(dpkg --info ${deb} | grep "^ Version: " | sed 's/^ Version: //g'); \
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echo "${package}=${version}" >> apt-pins.list; \
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done \
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&& mkdir apt-packages \
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&& mv /var/cache/apt/archives/*.deb apt-packages \
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&& apt-get install -y bzip2 dpkg-dev \
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&& dpkg-scanpackages apt-packages | bzip2 > apt-packages/Packages.bz2
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FROM build_base AS build_fetch
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ONBUILD COPY apt-hashes.list .
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ONBUILD COPY apt-sources.list .
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ONBUILD COPY apt-pins.list .
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ONBUILD RUN \
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rm -f /etc/apt/sources.list.d/* \
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&& mv apt-sources.list /etc/apt/sources.list \
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&& apt update -o Acquire::Check-Valid-Until=false \
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&& apt-get install \
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--download-only \
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--allow-downgrades \
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-o Acquire::Check-Valid-Until=false \
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-y $(cat apt-pins.list) \
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&& cd /var/cache/apt/archives \
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&& find . -type f \( -iname \*.deb \) -exec sha256sum {} \; \
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| sed 's/.\///g' \
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| LC_ALL=C sort \
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) > apt-hashes-compare.list \
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&& diff apt-hashes.list apt-hashes-compare.list \
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&& mkdir apt-packages \
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&& mv /var/cache/apt/archives/*.deb apt-packages \
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&& dpkg-scanpackages apt-packages | bzip2 > apt-packages/Packages.bz2
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FROM build_base AS build_reproduce
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ONBUILD COPY apt-hashes.list .
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ONBUILD COPY apt-sources.list .
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ONBUILD COPY apt-pins.list .
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ONBUILD COPY apt-packages .
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FROM build_${BUILD_ENV} as build
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RUN \
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rm -f /etc/apt/sources.list.d/* \
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&& echo "deb [trusted=yes] file:///. apt-packages/" > /etc/apt/sources.list \
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&& apt update -o Acquire::Check-Valid-Until=false \
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&& apt-get install \
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--allow-downgrades \
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-y $(cat apt-pins.list)
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FROM build as build-httpd
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ARG BUSYBOX_REPO=https://git.busybox.net/busybox
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ARG BUSYBOX_HASH=1a64f6a20aaf6ea4dbba68bbfa8cc1ab7e5c57c4 # 1.36.1
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RUN \
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git clone https://git.busybox.net/busybox \
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&& git -C busybox checkout ${BUSYBOX_HASH} \
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&& git -C busybox rev-parse --verify HEAD | grep -q ${BUSYBOX_HASH} || { \
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echo 'Error: Git ref/branch collision.'; exit 1; \
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}
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COPY config/busybox.config busybox/.config
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RUN \
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echo "building busybox httpd" \
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&& cd busybox \
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&& make \
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&& bash make_single_applets.sh \
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&& mv busybox_HTTPD ../httpd
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FROM build as build-site
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RUN mkdir build
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WORKDIR build
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COPY . .
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RUN bundle install
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COPY . /home
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RUN jekyll build
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FROM debian:bookworm AS mime-types
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RUN apt-get update && apt-get install -y media-types
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FROM build as build-rootfs
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RUN mkdir -p rootfs/etc \
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&& echo "nogroup:*:100:nobody" > rootfs/etc/group \
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&& echo "nobody:*:100:100:::" > rootfs/etc/passwd
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RUN echo 'types {' > /tmp/mime.types
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RUN sed -e '/^$/d' -e 's/$/;/' /etc/mime.types >> /tmp/mime.types
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RUN echo '}' >> /tmp/mime.types
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FROM nginx
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COPY --from=builder /home/_site /usr/share/nginx/html
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COPY --from=mime-types /tmp/mime.types /etc/nginx/mime.types
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FROM scratch
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COPY --from=build-rootfs --chown=100:100 rootfs /
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COPY --from=build-site build/_site static
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COPY --from=build-httpd httpd .
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USER 100:100
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EXPOSE 8080
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WORKDIR static
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ENTRYPOINT ["/httpd"]
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CMD ["-f","-v"]
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56
Makefile
56
Makefile
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@ -1,22 +1,44 @@
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.PHONY: build
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build:
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# Build Docker image
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docker build -t distrust-co .
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.PHONY: fullclean
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fullclean: clean
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docker rmi distrust-co || true
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docker image prune -f --filter label=stage=distrust-co-builder || true
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.PHONY: clean
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clean:
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rm -r _site || true
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_site: build
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mkdir -p _site
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docker run distrust-co tar c -C /usr/share/nginx/html . | tar x -C _site
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rm -r _site
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.PHONY: serve
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serve: build
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# Run Docker container with listener for current dir and port mapping
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docker run --rm -p 0.0.0.0:4000:80 -it distrust-co
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docker run --rm -p 8080:8080/tcp -it distrust/website
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.PHONY: build
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build: out/website.oci.tar
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config/apt-packages.list \
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config/apt-hashes.list \
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config/apt-sources.list \
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fetch/apt/Packages.bz2:
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buildah build \
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-f Dockerfile \
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-t distrust/website \
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--timestamp 1 \
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--format oci \
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--arch amd64 \
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--output cache/reproduce
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cp cache/reproduce/apt-packages/* fetch/apt/
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cp cache/reproduce/apt-*.list config
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out/website.oci.tar:
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buildah build \
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-f Dockerfile \
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-t distrust/website \
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--timestamp 1 \
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--format oci \
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--arch amd64 \
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buildah push \
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distrust/website \
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oci:cache/oci
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tar \
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-C cache/oci \
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--sort=name \
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--mtime='@0' \
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--owner=0 \
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--group=0 \
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--numeric-owner \
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-cf $@ \
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.
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||||
|
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