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https://github.com/oauth2-proxy/oauth2-proxy.git
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53 lines
2.2 KiB
Docker
53 lines
2.2 KiB
Docker
# This ARG has to be at the top, otherwise the docker daemon does not known what to do with FROM ${RUNTIME_IMAGE}
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ARG RUNTIME_IMAGE=gcr.io/distroless/static:nonroot
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# All builds should be done using the platform native to the build node to allow
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# cache sharing of the go mod download step.
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# Go cross compilation is also faster than emulation the go compilation across
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# multiple platforms.
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FROM --platform=${BUILDPLATFORM} docker.io/library/golang:1.22-bookworm AS builder
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# Copy sources
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WORKDIR $GOPATH/src/github.com/oauth2-proxy/oauth2-proxy
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# Fetch dependencies
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COPY go.mod go.sum ./
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RUN go mod download
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# Now pull in our code
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COPY . .
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# Arguments go here so that the previous steps can be cached if no external
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# sources have changed.
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ARG VERSION
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ARG TARGETPLATFORM
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ARG BUILDPLATFORM
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# Build binary and make sure there is at least an empty key file.
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# This is useful for GCP App Engine custom runtime builds, because
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# you cannot use multiline variables in their app.yaml, so you have to
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# build the key into the container and then tell it where it is
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# by setting OAUTH2_PROXY_JWT_KEY_FILE=/etc/ssl/private/jwt_signing_key.pem
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# in app.yaml instead.
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# Set the cross compilation arguments based on the TARGETPLATFORM which is
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# automatically set by the docker engine.
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RUN case ${TARGETPLATFORM} in \
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"linux/amd64") GOARCH=amd64 ;; \
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# arm64 and arm64v8 are equivilant in go and do not require a goarm
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# https://github.com/golang/go/wiki/GoArm
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"linux/arm64" | "linux/arm/v8") GOARCH=arm64 ;; \
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"linux/ppc64le") GOARCH=ppc64le ;; \
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"linux/s390x") GOARCH=s390x ;; \
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"linux/arm/v6") GOARCH=arm GOARM=6 ;; \
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"linux/arm/v7") GOARCH=arm GOARM=7 ;; \
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esac && \
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printf "Building OAuth2 Proxy for arch ${GOARCH}\n" && \
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GOARCH=${GOARCH} VERSION=${VERSION} make build && touch jwt_signing_key.pem
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# Copy binary to runtime image
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FROM ${RUNTIME_IMAGE}
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COPY --from=builder /go/src/github.com/oauth2-proxy/oauth2-proxy/oauth2-proxy /bin/oauth2-proxy
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COPY --from=builder /go/src/github.com/oauth2-proxy/oauth2-proxy/jwt_signing_key.pem /etc/ssl/private/jwt_signing_key.pem
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ENTRYPOINT ["/bin/oauth2-proxy"]
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