FROM golang:1.12-stretch AS builder # Download tools RUN curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b $(go env GOPATH)/bin v1.17.1 # Copy sources WORKDIR $GOPATH/src/github.com/pusher/oauth2_proxy COPY . . # Fetch dependencies RUN go mod download # 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 ./configure && make build && touch jwt_signing_key.pem # Copy binary to alpine FROM alpine:3.9 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt COPY --from=builder /go/src/github.com/pusher/oauth2_proxy/oauth2_proxy /bin/oauth2_proxy COPY --from=builder /go/src/github.com/pusher/oauth2_proxy/jwt_signing_key.pem /etc/ssl/private/jwt_signing_key.pem USER 2000:2000 ENTRYPOINT ["/bin/oauth2_proxy"]