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Docker build optimization

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Update Dockefile to get a much smaller footprint with alpine image.

Optimize ordering of build steps to avoid needless downloads.

Include CA certificates needed for practical use.
This commit is contained in:
YAEGASHI Takeshi 2019-01-22 02:50:50 +09:00
parent 2943da00e2
commit cb41a91a65
1 changed files with 12 additions and 8 deletions
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@ -1,18 +1,22 @@
FROM golang:1.11-stretch AS builder
WORKDIR /go/src/github.com/pusher/oauth2_proxy
# Download tools
RUN wget -O $GOPATH/bin/dep https://github.com/golang/dep/releases/download/v0.5.0/dep-linux-amd64
RUN chmod +x $GOPATH/bin/dep
# Copy sources
WORKDIR $GOPATH/src/github.com/pusher/oauth2_proxy
COPY . .
# Fetch dependencies
RUN wget -O dep https://github.com/golang/dep/releases/download/v0.5.0/dep-linux-amd64
RUN chmod +x dep
RUN mv dep $GOPATH/bin/dep
RUN dep ensure --vendor-only
# Build image
RUN ./configure && make clean oauth2_proxy
# Build binary
RUN ./configure && make build
# Copy binary to debian
FROM debian:stretch
# Copy binary to alpine
FROM alpine:3.8
RUN apk add --no-cache ca-certificates
COPY --from=builder /go/src/github.com/pusher/oauth2_proxy/oauth2_proxy /bin/oauth2_proxy
ENTRYPOINT ["/bin/oauth2_proxy"]