oauth2-proxy/Dockerfile at master · jverhoeven/oauth2-proxy

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FROM golang:1.14-buster AS builder

# Download tools

RUN curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b $(go env GOPATH)/bin v1.24.0

# Copy sources

WORKDIR $GOPATH/src/github.com/oauth2-proxy/oauth2-proxy

# Fetch dependencies

COPY go.mod go.sum ./

RUN GO111MODULE=on go mod download

# Now pull in our code

COPY . .

# Build binary and make sure there is at least an empty key file.

# This is useful for GCP App Engine custom runtime builds, because

# you cannot use multiline variables in their app.yaml, so you have to

# build the key into the container and then tell it where it is

# by setting OAUTH2_PROXY_JWT_KEY_FILE=/etc/ssl/private/jwt_signing_key.pem

# in app.yaml instead.

RUN make build && touch jwt_signing_key.pem

# Copy binary to alpine

FROM alpine:3.11

COPY nsswitch.conf /etc/nsswitch.conf

COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt

COPY --from=builder /go/src/github.com/oauth2-proxy/oauth2-proxy/oauth2-proxy /bin/oauth2-proxy

COPY --from=builder /go/src/github.com/oauth2-proxy/oauth2-proxy/jwt_signing_key.pem /etc/ssl/private/jwt_signing_key.pem

USER 2000:2000

ENTRYPOINT ["/bin/oauth2-proxy"]