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Rewrite /init in Go

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This uses a more memory efficient copy, and gets us closer to
not having a shell in the base system if not required.

Signed-off-by: Justin Cormack <justin.cormack@docker.com>
This commit is contained in:
Justin Cormack
2017-07-24 14:59:47 +01:00
parent acc87aca16
commit 6307ec9cd1
191 changed files with 126646 additions and 11 deletions
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9
pkg/init/Dockerfile
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@@ -4,6 +4,13 @@ RUN apk add --no-cache --initdb alpine-baselayout make gcc musl-dev
ADD usermode-helper.c .
RUN make usermode-helper
RUN apk add --no-cache go musl-dev
ENV GOPATH=/go PATH=$PATH:/go/bin
COPY init.go /go/src/init/
COPY vendor /go/src/init/vendor/
RUN go-compile.sh /go/src/init/
FROM linuxkit/alpine:9bcf61f605ef0ce36cc94d59b8eac307862de6e1 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 busybox musl
@@ -15,8 +22,8 @@ FROM scratch
ENTRYPOINT []
CMD []
WORKDIR /
COPY --from=build /go/bin/init /
COPY --from=build usermode-helper /sbin/
COPY --from=mirror /out/ /
COPY init /
COPY etc etc/
COPY bin bin/