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pkg: Convert dhcpcd to use the Alpine base image and git tree hash

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This builds the dhcpcd package from a fixed Alpine 3.5 base and adds
the dhcpcd daemon from the Alpine base image. This should make the
build reproducible and allows us to use the git tree hash.

Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
This commit is contained in:
Rolf Neugebauer 2017-05-04 12:25:17 +01:00
parent aea6d6c54e
commit e929205c31
2 changed files with 17 additions and 36 deletions
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17
pkg/dhcpcd/Dockerfile
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@ -1,12 +1,13 @@
FROM alpine:3.5
FROM linuxkit/alpine:f0169b60fb260d74025496ae6fd93213fecaba8f@sha256:23743c7206ebe8a609442c5ac7084a26ed45ce8f5213960428bca264225849f1 AS mirror
RUN \
apk update && apk upgrade -a && \
apk add --no-cache \
dhcpcd \
openrc \
&& true
FROM alpine:3.5@sha256:dfbd4a3a8ebca874ebd2474f044a0b33600d4523d03b0df76e5c5986cb02d7e8
COPY --from=mirror /etc/apk/repositories /etc/apk/repositories
COPY --from=mirror /etc/apk/keys /etc/apk/keys/
COPY --from=mirror /mirror /mirror/
RUN apk add dhcpcd
RUN rm -rf /mirror /etc/apk/repositories /etc/apk/keys
COPY . .
CMD ["/sbin/dhcpcd", "--nobackground", "-f", "/dhcpcd.conf"]

36
pkg/dhcpcd/Makefile
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@ -1,34 +1,14 @@
.PHONY: tag push clean container
.PHONY: tag push
default: push
IMAGE=dhcpcd
DEPS=Dockerfile Makefile dhcpcd.conf usr/lib/dhcpcd/dhcpcd-hooks/10-mtu
BASE=alpine:3.5
HASH?=$(shell git ls-tree HEAD -- ../$(notdir $(CURDIR)) | awk '{print $$3}')
DEPS=dhcpcd.conf usr/lib/dhcpcd/dhcpcd-hooks/10-mtu
tag: $(DEPS)
docker build --squash --no-cache --network=none -t linuxkit/$(IMAGE):$(HASH) .
container: Dockerfile $(DEPS)
tar cf - $^ | docker build --no-cache -t $(IMAGE):build -
hash: Dockerfile $(DEPS)
DOCKER_CONTENT_TRUST=1 docker pull $(BASE)
tar cf - $^ | docker build --no-cache -t $(IMAGE):build -
docker run --rm $(IMAGE):build sh -c 'cat $^ /lib/apk/db/installed | sha1sum' | sed 's/ .*//' > hash
push: hash container
docker pull linuxkit/$(IMAGE):$(shell cat hash) || \
(docker tag $(IMAGE):build linuxkit/$(IMAGE):$(shell cat hash) && \
docker push linuxkit/$(IMAGE):$(shell cat hash))
docker rmi $(IMAGE):build
rm -f hash
tag: hash container
docker pull linuxkit/$(IMAGE):$(shell cat hash) || \
docker tag $(IMAGE):build linuxkit/$(IMAGE):$(shell cat hash)
docker rmi $(IMAGE):build
rm -f hash
clean:
rm -rf hash
.DELETE_ON_ERROR:
push: tag
docker pull linuxkit/$(IMAGE):$(HASH) || \
docker push linuxkit/$(IMAGE):$(HASH)