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| author |  Miek Gieben <miek@miek.nl>
| 2018-06-04 19:20:21 +0100 |
|---|---|---|
| committer |  GitHub <noreply@github.com>
| 2018-06-04 19:20:21 +0100 |
| commit | a77d9834d867b44a7f10d1481916498332c586ff (patch) | |
| tree | c17bc9ac38a12644afc7ebe83720531c063f8453 /Dockerfile | |
| parent | 70a53e25c942d95de98e30d9f5f5636d0d315d25 (diff) | |
| download | coredns-a77d9834d867b44a7f10d1481916498332c586ff.tar.gz coredns-a77d9834d867b44a7f10d1481916498332c586ff.tar.zst coredns-a77d9834d867b44a7f10d1481916498332c586ff.zip | |
Docker: drop alpine (#1843)
* Docker: drop alpine
Create a multistage docker build image that uses debian to install certs
and then create the final image by using FROM: scratch. This creates a
(slightly) smaller images and drops busybox and alpine.
* Even less copying
Diffstat (limited to 'Dockerfile')
| -rw-r--r-- | Dockerfile | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/Dockerfile b/Dockerfile index d732c1daf..9c4608589 100644 --- a/Dockerfile +++ b/Dockerfile @@ -1,8 +1,11 @@ -FROM alpine:latest +FROM debian:stable-slim -# Only need ca-certificates & openssl if want to use DNS over TLS (RFC 7858). -RUN apk --no-cache add bind-tools ca-certificates openssl && update-ca-certificates +RUN apt-get update && apt-get -uy upgrade +RUN apt-get -y install ca-certificates && update-ca-certificates +FROM scratch + +COPY --from=0 /etc/ssl/certs /etc/ssl/certs ADD coredns /coredns EXPOSE 53 53/udp |