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Add Alpine package slirp4netns to dind-rootless #543

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Merged
tianon merged 1 commit into from
Jul 1, 2025
Merged

Add Alpine package slirp4netns to dind-rootless #543

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3 changes: 2 additions & 1 deletion 28/dind-rootless/Dockerfile
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3 changes: 2 additions & 1 deletion Dockerfile-dind-rootless.template
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,8 @@ FROM docker:{{ env.version }}-dind

# busybox "ip" is insufficient:
# [rootlesskit:child ] error: executing [[ip tuntap add name tap0 mode tap] [ip link set tap0 address 02:50:00:00:00:01]]: exit status 1
RUN apk add --no-cache iproute2 fuse-overlayfs
# slirp4netns can be selected as rootlesskit's net driver using "-e DOCKERD_ROOTLESS_ROOTLESSKIT_NET=slirp4netns"
RUN apk add --no-cache iproute2 fuse-overlayfs slirp4netns
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@AkihiroSuda AkihiroSuda Jul 8, 2025

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The default can be changed here:

docker/dockerd-entrypoint.sh

Line 221 in 89f7fcb

--net="${DOCKERD_ROOTLESS_ROOTLESSKIT_NET:-vpnkit}" \

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@AkihiroSuda AkihiroSuda Jul 8, 2025

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But probably we should rather just rely on https://github.com/moby/moby/blob/master/contrib/dockerd-rootless.sh to detect the default


# "/run/user/UID" will be used by default as the value of XDG_RUNTIME_DIR
RUN mkdir /run/user && chmod 1777 /run/user
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