luzifer/nginx-sso
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Use multi-stage build to reduce image size

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Signed-off-by: Knut Ahlers <knut@ahlers.me>
This commit is contained in:
Knut Ahlers 2018-09-20 16:26:33 +02:00
parent 773a88c5ba
commit a272b49cf8
Signed by: luzifer
GPG key ID: DC2729FDD34BE99E
2 changed files with 30 additions and 17 deletions
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31
Dockerfile
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@ -1,22 +1,35 @@
FROM golang:alpine
LABEL maintainer "Knut Ahlers <knut@ahlers.me>"
FROM golang:alpine as builder
ADD . /go/src/github.com/Luzifer/nginx-sso
WORKDIR /go/src/github.com/Luzifer/nginx-sso
RUN set -ex \
&& apk --no-cache add git ca-certificates bash curl \
&& go install -ldflags "-X main.version=$(git describe --tags || git rev-parse --short HEAD || echo dev)" \
&& apk add --update git \
&& go install -ldflags "-X main.version=$(git describe --tags || git rev-parse --short HEAD || echo dev)"
FROM alpine:3.8
LABEL maintainer "Knut Ahlers <knut@ahlers.me>"
RUN set -ex \
&& apk --no-cache add \
bash \
ca-certificates \
curl \
&& curl -sSfLo /usr/local/bin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v1.2.1/dumb-init_1.2.1_amd64 \
&& chmod +x /usr/local/bin/dumb-init \
&& apk --no-cache del --purge git curl
&& apk --no-cache del --purge \
curl
COPY --from=builder /go/bin/nginx-sso /usr/local/bin/
COPY --from=builder /go/src/github.com/Luzifer/nginx-sso/config.yaml /usr/local/share/nginx-sso/
COPY --from=builder /go/src/github.com/Luzifer/nginx-sso/docker-start.sh /usr/local/bin/
COPY --from=builder /go/src/github.com/Luzifer/nginx-sso/frontend/* /usr/local/share/nginx-sso/frontend/
EXPOSE 8082
VOLUME ["/data"]
ADD docker-start.sh /usr/local/bin
ENTRYPOINT ["/usr/local/bin/docker-start.sh"]
CMD ["--"]
# vim: set ft=Dockerfile:

6
docker-start.sh
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@ -2,16 +2,16 @@
set -euo pipefail
# Copy frontend if not available
[ -d /data/frontend ] || cp -r /go/src/github.com/Luzifer/nginx-sso/frontend /data/frontend
[ -d /data/frontend ] || cp -r /usr/local/share/nginx-sso/frontend /data/frontend
[ -e /data/config.yaml ] || {
cp /go/src/github.com/Luzifer/nginx-sso/config.yaml /data/config.yaml
cp /usr/local/share/nginx-sso/config.yaml /data/config.yaml
echo "An example configuration was copied to /data/config.yaml - You want to edit that one!"
exit 1
}
echo "Starting nginx-sso"
exec /go/bin/nginx-sso \
exec /usr/local/bin/nginx-sso \
--config /data/config.yaml \
--frontend-dir /data/frontend \
$@