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sshd+getty: Add apk to these containers

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Since these are the user login containers, having the ability to add packages
is useful (e.g. I quite often find I want strace).

Doing this requires that we not share `/var` with the login containers since we
want the apk database therein. Previously it was thought that the containers
might need some parts of `/var` for `ctr` to work (e.g. `/var/lib/containerd`)
but this is not the case now (if it ever was) based on my testing.

Fixes #2206.

Signed-off-by: Ian Campbell <ijc@docker.com>
This commit is contained in:
Ian Campbell
2017-07-14 12:52:56 +01:00
parent 5545f3085a
commit c48acd5d9d
2 changed files with 9 additions and 6 deletions
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8
pkg/getty/Dockerfile
View File

@@ -1,15 +1,17 @@
FROM linuxkit/alpine:9bcf61f605ef0ce36cc94d59b8eac307862de6e1 AS mirror
FROM linuxkit/alpine:a39a433162a873519910a07beeb3e8db22529956 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 \
apk-tools \
busybox \
ca-certificates \
musl \
tini \
util-linux \
&& true
RUN rm -rf /out/etc/apk /out/lib/apk /out/var/cache
RUN mv /out/etc/apk/repositories.upstream /out/etc/apk/repositories
#
# We require a version of `setsid(1)` which supports the `-w`
# option, which is not available in all implementations (e.g. the
@@ -29,4 +31,4 @@ COPY --from=mirror /out/ /
COPY usr/ /usr/
COPY etc/ /etc/
CMD ["/usr/bin/rungetty.sh"]
LABEL org.mobyproject.config='{"pid": "host", "net":"host", "binds": ["/run:/run", "/tmp:/tmp", "/etc:/hostroot/etc", "/usr/bin/ctr:/usr/bin/ctr", "/usr/bin/runc:/usr/bin/runc", "/var:/var","/containers:/containers","/dev:/dev","/sys:/sys"], "capabilities": ["all"]}'
LABEL org.mobyproject.config='{"pid": "host", "net":"host", "binds": ["/run:/run", "/tmp:/tmp", "/etc:/hostroot/etc", "/usr/bin/ctr:/usr/bin/ctr", "/usr/bin/runc:/usr/bin/runc", "/containers:/containers","/dev:/dev","/sys:/sys"], "capabilities": ["all"]}'