mirror of
https://github.com/N0rthernL1ghts/s6-rootfs.git
synced 2025-12-11 08:32:49 +01:00
Refactor, add arch/noarch symlinks, simplify and rebase build stages to busybox
This commit is contained in:
93
Dockerfile
93
Dockerfile
@@ -1,69 +1,74 @@
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ARG S6_OVERLAY_VERSION="3.2.0.2"
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ARG S6_OVERLAY_RELEASE="https://github.com/just-containers/s6-overlay/releases/download/"
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ARG S6_OVERLAY_RELEASE="https://github.com/just-containers/s6-overlay/releases/download"
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ARG S6_OVERLAY_PAK_EXT=".tar.xz"
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# First stage - Download s6-overlay noarch base and unpack it
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FROM scratch AS downloader-s6-base
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ARG S6_OVERLAY_VERSION
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ARG S6_OVERLAY_RELEASE
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ARG S6_OVERLAY_PAK_EXT
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ADD "${S6_OVERLAY_RELEASE}/v${S6_OVERLAY_VERSION}/s6-overlay-noarch${S6_OVERLAY_PAK_EXT}" /s6overlay-base.tar.xz
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# Second stage - Download s6-overlay platform-dependent binaries and unpack
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FROM alpine:3.21 AS downloader-s6-bin
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# Downloader stage: download s6-overlay base, binary, symlinks and checksums
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FROM busybox AS downloader
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ARG TARGETPLATFORM
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ARG S6_OVERLAY_VERSION
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ARG S6_OVERLAY_RELEASE
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ARG S6_OVERLAY_PAK_EXT
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ARG S6_OVERLAY_RELEASE_URL="${S6_OVERLAY_RELEASE}/v${S6_OVERLAY_VERSION}/s6-overlay-${TARGETPLATFORM}${S6_OVERLAY_PAK_EXT}"
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ARG S6_OVERLAY_HASH_URL="${S6_OVERLAY_RELEASE}/v${S6_OVERLAY_VERSION}/s6-overlay-${TARGETPLATFORM}${S6_OVERLAY_PAK_EXT}.sha256"
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# Set environment variables
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ENV BASE_URL="${S6_OVERLAY_RELEASE}/v${S6_OVERLAY_VERSION}/s6-overlay-noarch${S6_OVERLAY_PAK_EXT}"
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ENV BASE_HASH_URL="${BASE_URL}.sha256"
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ENV BIN_URL="${S6_OVERLAY_RELEASE}/v${S6_OVERLAY_VERSION}/s6-overlay-${TARGETPLATFORM}${S6_OVERLAY_PAK_EXT}"
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ENV BIN_HASH_URL="${BIN_URL}.sha256"
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ENV SYMLINKS_ARCH_URL="${S6_OVERLAY_RELEASE}/v${S6_OVERLAY_VERSION}/s6-overlay-symlinks-arch${S6_OVERLAY_PAK_EXT}"
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ENV SYMLINKS_ARCH_HASH_URL="${SYMLINKS_ARCH_URL}.sha256"
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ENV SYMLINKS_NOARCH_URL="${S6_OVERLAY_RELEASE}/v${S6_OVERLAY_VERSION}/s6-overlay-symlinks-noarch${S6_OVERLAY_PAK_EXT}"
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ENV SYMLINKS_NOARCH_HASH_URL="${SYMLINKS_NOARCH_URL}.sha256"
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RUN set -eux \
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&& apk add --no-cache wget \
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&& wget -O /s6overlay-bin.tar.xz "$(echo ${S6_OVERLAY_RELEASE_URL} | sed 's/linux\///g' | sed 's/amd64/x86_64/g' | sed 's/arm64/aarch64/g' | sed 's/arm\/v7/armhf/g')"
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# Replace platform
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&& BIN_URL_FIXED=$(echo "${BIN_URL}" | sed -e 's/linux\///g' -e 's/amd64/x86_64/g' -e 's/arm64/aarch64/g' -e 's|arm/v7|armhf|g') \
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&& BIN_HASH_URL_FIXED=$(echo "${BIN_HASH_URL}" | sed -e 's/linux\///g' -e 's/amd64/x86_64/g' -e 's/arm64/aarch64/g' -e 's|arm/v7|armhf|g') \
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# Download s6-overlay binaries
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&& wget -O /s6overlay-bin.tar.xz "${BIN_URL_FIXED}" \
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&& wget -O /s6overlay-bin.tar.xz.sha256 "${BIN_HASH_URL_FIXED}" \
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# Download s6-overlay base and its hash
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&& wget -O /s6overlay-base.tar.xz "${BASE_URL}" \
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&& wget -O /s6overlay-base.tar.xz.sha256 "${BASE_HASH_URL}" \
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# Download s6-overlay symlinks \
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&& wget -O /s6overlay-arch-symlinks.tar.xz "${SYMLINKS_ARCH_URL}" \
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&& wget -O /s6overlay-arch-symlinks.tar.xz.sha256 "${SYMLINKS_ARCH_HASH_URL}" \
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&& wget -O /s6overlay-noarch-symlinks.tar.xz "${SYMLINKS_NOARCH_URL}" \
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&& wget -O /s6overlay-noarch-symlinks.tar.xz.sha256 "${SYMLINKS_NOARCH_HASH_URL}" \
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# Build SHA256SUMS file
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&& echo "$(cut -d' ' -f1 /s6overlay-base.tar.xz.sha256) /s6overlay-base.tar.xz" > /SHA256SUMS \
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&& echo "$(cut -d' ' -f1 /s6overlay-bin.tar.xz.sha256) /s6overlay-bin.tar.xz" >> /SHA256SUMS \
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&& echo "$(cut -d' ' -f1 /s6overlay-arch-symlinks.tar.xz.sha256) /s6overlay-arch-symlinks.tar.xz" >> /SHA256SUMS \
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&& echo "$(cut -d' ' -f1 /s6overlay-noarch-symlinks.tar.xz.sha256) /s6overlay-noarch-symlinks.tar.xz" >> /SHA256SUMS \
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# Verify integrity of downloaded files
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&& sha256sum -c /SHA256SUMS
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# Builder stage
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FROM busybox AS builder
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# Third stage - Download s6-overlay platform-dependent hashes
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FROM alpine:3.21 AS downloader-s6-sha256-sums
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ARG TARGETPLATFORM
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ARG S6_OVERLAY_VERSION
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ARG S6_OVERLAY_RELEASE
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ARG S6_OVERLAY_PAK_EXT
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ARG S6_OVERLAY_BASE_HASH_URL="${S6_OVERLAY_RELEASE}/v${S6_OVERLAY_VERSION}/s6-overlay-noarch${S6_OVERLAY_PAK_EXT}.sha256"
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ARG S6_OVERLAY_BIN_HASH_URL="${S6_OVERLAY_RELEASE}/v${S6_OVERLAY_VERSION}/s6-overlay-${TARGETPLATFORM}${S6_OVERLAY_PAK_EXT}.sha256"
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COPY --from=downloader ["/s6overlay-base.tar.xz", "/s6overlay-bin.tar.xz", "/s6overlay-arch-symlinks.tar.xz", "/s6overlay-noarch-symlinks.tar.xz", "/tmp/s6/"]
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RUN set -eux \
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&& apk add --no-cache wget \
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&& wget -O /s6overlay-base.tar.xz.sha256 "${S6_OVERLAY_BASE_HASH_URL}" \
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&& wget -O /s6overlay-bin.tar.xz.sha256 "$(echo "${S6_OVERLAY_BIN_HASH_URL}" | sed 's/linux\///g' | sed 's/amd64/x86_64/g' | sed 's/arm64/aarch64/g' | sed 's/arm\/v7/armhf/g')" \
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&& echo "$(cat /s6overlay-base.tar.xz.sha256 | cut -d' ' -f1) /s6overlay-base.tar.xz" > /SHA256SUMS \
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&& echo "$(cat /s6overlay-bin.tar.xz.sha256 | cut -d' ' -f1) /s6overlay-bin.tar.xz" >> /SHA256SUMS \
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&& rm /s6overlay-base.tar.xz.sha256 \
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&& rm /s6overlay-bin.tar.xz.sha256
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&& mkdir -p /build \
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&& tar -Jxpf /tmp/s6/s6overlay-base.tar.xz -C /build \
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&& tar -Jxpf /tmp/s6/s6overlay-bin.tar.xz -C /build \
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&& tar -Jxpf /tmp/s6/s6overlay-arch-symlinks.tar.xz -C /build \
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&& tar -Jxpf /tmp/s6/s6overlay-noarch-symlinks.tar.xz -C /build
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# Fourth stage - Build rootfs from s6 parts
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FROM alpine:3.21 AS rootfs-builder
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# Rootfs
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FROM scratch AS rootfs
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COPY --from=downloader-s6-sha256-sums ["/SHA256SUMS", "/"]
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COPY --from=downloader-s6-base ["/s6overlay-base.tar.xz", "/s6overlay-base.tar.xz"]
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COPY --from=downloader-s6-bin ["/s6overlay-bin.tar.xz", "/s6overlay-bin.tar.xz"]
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WORKDIR "/rootfs-build/"
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RUN set -eux \
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&& sha256sum -c /SHA256SUMS \
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&& apk add --no-cache tar xz \
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&& tar -Jxpf /s6overlay-base.tar.xz -C /rootfs-build \
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&& tar -Jxpf /s6overlay-bin.tar.xz -C /rootfs-build
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COPY --from=builder ["/build/", "/"]
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# Final stage
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FROM scratch AS s6-rootfs
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# Final image: minimal rootfs
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FROM scratch
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LABEL maintainer="Aleksandar Puharic <aleksandar@puharic.com>"
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COPY --from=rootfs-builder ["/rootfs-build/", "/"]
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COPY --from=rootfs ["/", "/"]
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@@ -1,5 +1,5 @@
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# First stage - Download s6-overlay and unpack it
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FROM alpine:3.21 AS downloader
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FROM busybox AS downloader
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ARG TARGETPLATFORM
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@@ -7,15 +7,15 @@ ARG TARGETPLATFORM
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ARG S6_OVERLAY_VERSION="2.2.0.3"
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ARG S6_OVERLAY_RELEASE="https://github.com/just-containers/s6-overlay/releases/download/v${S6_OVERLAY_VERSION}/s6-overlay-${TARGETPLATFORM}.tar.gz"
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WORKDIR "/s6-overlay/"
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RUN apk add --no-cache wget tar gzip \
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RUN set -eux \
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&& mkdir -p /s6-overlay \
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&& wget -O /tmp/s6overlay.tar.gz $(echo ${S6_OVERLAY_RELEASE} | sed 's/linux\///g' | sed 's/arm64/aarch64/g' | sed 's/arm\/v7/armhf/g') \
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&& tar xzf /tmp/s6overlay.tar.gz -C /s6-overlay
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# Final stage
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FROM scratch AS s6-rootfs
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FROM scratch
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LABEL maintainer="Aleksandar Puharic <aleksandar@puharic.com>"
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