mirror of https://github.com/knative/docs.git
32 lines
991 B
Docker
32 lines
991 B
Docker
# Use the official Golang image to create a build artifact.
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# This is based on Debian and sets the GOPATH to /go.
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# https://hub.docker.com/_/golang
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FROM golang:latest AS builder
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ARG TARGETOS
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ARG TARGETARCH
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# Copy local code to the container image.
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WORKDIR /app
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# Copy local code to the container image.
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COPY . ./
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# Install dependencies and tidy up the go.mod and go.sum files.
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RUN go mod tidy
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# Build the binary.
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# -mod=readonly ensures immutable go.mod and go.sum in container builds.
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RUN CGO_ENABLED=0 GOOS=linux GOOS=${TARGETOS} GOARCH=${TARGETARCH} go build -mod=readonly -v -o helloworld
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# Use a Docker multi-stage build to create a lean production image.
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# https://docs.docker.com/develop/develop-images/multistage-build/#use-multi-stage-builds
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FROM alpine:3
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RUN apk add --no-cache ca-certificates
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# Copy the binary to the production image from the builder stage.
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COPY --from=builder /app/helloworld /helloworld
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# Run the web service on container startup.
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CMD ["/helloworld"]
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