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Add an ip package

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This contans the upstream (non busybox) version of `ip` and also the
Wireguard tools as these aere not yet integrated into `ip`. It is designed
to be used for network configuration.

For example a Wireguard interface can be setup with something like:
```
  - name: wg
    image: linuxkit/ip
    net: new
    binds:
      - /etc/wireguard:/etc/wireguard
    command: ["sh", "-c", "ip link set dev wg0 up; ip address add dev wg0 192.168.2.1 peer 192.168.2.2; wg setconf wg0 /etc/wireguard/wg0.conf; wg show wg0"]
    runtime:
      interfaces:
        - name: wg0
          add: wireguard
          createInRoot: true
      bindNS:
          net: /run/netns/wg
```

This binds the net namespace so other containers can use it later.

Note that `ip` supports batch scripts with `ip -b file` which is quite convenient for
this use case.

Alas `wg-quick` requires `bash` so this is currently a bit bloated, maybe @zx2c4
might be persuaded to rewrite it without bashisms...

Signed-off-by: Justin Cormack <justin.cormack@docker.com>
This commit is contained in:
Justin Cormack 2017-08-17 12:18:38 +01:00
parent c82b2fe13e
commit 57512b3ec9
2 changed files with 22 additions and 0 deletions
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19
pkg/ip/Dockerfile Normal file
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FROM linuxkit/alpine:87a0cd10449d72f374f950004467737dbf440630 AS mirror
RUN mkdir -p /out/etc/apk && cp -r /etc/apk/* /out/etc/apk/
RUN apk add --no-cache --initdb -p /out \
alpine-baselayout \
bash \
busybox \
iproute2 \
musl \
wireguard-tools
# Remove apk residuals
RUN rm -rf /out/etc/apk /out/lib/apk /out/var/cache
FROM scratch
ENTRYPOINT []
CMD []
WORKDIR /
COPY --from=mirror /out/ /
LABEL org.mobyproject.config='{"capabilities": ["CAP_NET_ADMIN", "CAP_NET_RAW"]}'

3
pkg/ip/Makefile Normal file
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IMAGE=ip
include ../package.mk