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Add static bin dir support to k3s docker image

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Static bin dir is first in search path and is on /var/lib/rancher/k3s volume, which can be persisted by users. If the volume is empty it will just fall back to the legacy /bin dir.
This commit is contained in:
Brad Davidson 2025-02-13 20:49:11 +00:00 committed by Brad Davidson
parent 6ebf72d3a3
commit b2d495e17f
1 changed files with 4 additions and 3 deletions
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7
package/Dockerfile
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@ -1,8 +1,9 @@
FROM alpine:3.21 as base
RUN apk add -U ca-certificates zstd tzdata
COPY build/out/data-linux.tar.zst /
RUN mkdir -p /image/etc/ssl/certs /image/run /image/var/run /image/tmp /image/lib/modules /image/lib/firmware && \
RUN mkdir -p /image/etc/ssl/certs /image/run /image/var/run /image/tmp /image/lib/modules /image/lib/firmware /image/var/lib/rancher/k3s/data/cni && \
zstdcat -d /data-linux.tar.zst | tar -xa -C /image && \
for FILE in cni $(/image/bin/find /image/bin -lname cni -printf "%f\n"); do ln -s /bin/cni /image/var/lib/rancher/k3s/data/cni/$FILE; done && \
echo "root:x:0:0:root:/:/bin/sh" > /image/etc/passwd && \
echo "root:x:0:" > /image/etc/group && \
cp /etc/ssl/certs/ca-certificates.crt /image/etc/ssl/certs/ca-certificates.crt
@ -17,12 +18,12 @@ RUN mkdir -p /etc && \
chmod 1777 /tmp
FROM scratch
COPY --from=collect / /
VOLUME /var/lib/kubelet
VOLUME /var/lib/rancher/k3s
VOLUME /var/lib/cni
VOLUME /var/log
ENV PATH="$PATH:/bin/aux"
COPY --from=collect / /
ENV PATH="/var/lib/rancher/k3s/data/cni:$PATH:/bin/aux"
ENV CRI_CONFIG_FILE="/var/lib/rancher/k3s/agent/etc/crictl.yaml"
ENTRYPOINT ["/bin/k3s"]
CMD ["agent"]