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containerfile: use a separate build stage for bootc #23

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5f19d90
containerfile: use a separate build stage for bootc
saminaltamimi Jan 16, 2026
0de5ea3
containerfile: add missing dependency
saminaltamimi Jan 16, 2026
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15 changes: 9 additions & 6 deletions Containerfile
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Original file line number Diff line number Diff line change
@@ -1,3 +1,9 @@
FROM docker.io/archlinux/archlinux:latest AS builder
RUN pacman -Syu --noconfirm make git rust go-md2man ostree glibc pkgconf
WORKDIR /build/bootc
RUN git clone "https://github.com/bootc-dev/bootc.git" . && \
make bin install-all DESTDIR=/output

FROM docker.io/archlinux/archlinux:latest

# Move everything from `/var` to `/usr/lib/sysimage` so behavior around pacman remains the same on `bootc usroverlay`'d systems
Expand All @@ -8,16 +14,13 @@ RUN pacman -Syu --noconfirm

RUN pacman -Sy --noconfirm base dracut linux linux-firmware ostree btrfs-progs e2fsprogs xfsprogs dosfstools skopeo dbus dbus-glib glib2 ostree shadow && pacman -S --clean --noconfirm

COPY --from=builder /output /

# https://github.com/bootc-dev/bootc/issues/1801
RUN --mount=type=tmpfs,dst=/tmp --mount=type=tmpfs,dst=/root \
pacman -S --noconfirm make git rust go-md2man && \
git clone "https://github.com/bootc-dev/bootc.git" /tmp/bootc && \
make -C /tmp/bootc bin install-all && \
printf "systemdsystemconfdir=/etc/systemd/system\nsystemdsystemunitdir=/usr/lib/systemd/system\n" | tee /usr/lib/dracut/dracut.conf.d/30-bootcrew-fix-bootc-module.conf && \
printf 'reproducible=yes\nhostonly=no\ncompress=zstd\nadd_dracutmodules+=" ostree bootc "' | tee "/usr/lib/dracut/dracut.conf.d/30-bootcrew-bootc-container-build.conf" && \
dracut --force "$(find /usr/lib/modules -maxdepth 1 -type d | grep -v -E "*.img" | tail -n 1)/initramfs.img" && \
pacman -Rns --noconfirm make git rust go-md2man && \
pacman -S --clean --noconfirm
dracut --force "$(find /usr/lib/modules -maxdepth 1 -type d | grep -v -E "*.img" | tail -n 1)/initramfs.img"

# Necessary for general behavior expected by image-based systems
RUN sed -i 's|^HOME=.*|HOME=/var/home|' "/etc/default/useradd" && \
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