2019-10-04 19:49:31 +02:00
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# Use the offical 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:1.13 as builder
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# Create and change to the app directory.
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WORKDIR /app
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# Retrieve application dependencies.
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# This allows the container build to reuse cached dependencies.
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COPY go.* ./
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RUN go mod download
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# Copy local code to the container image.
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COPY . ./
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# Build the binary.
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2019-10-04 20:04:48 +02:00
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RUN CGO_ENABLED=0 GOOS=linux go build -v -o server
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2019-10-04 19:49:31 +02:00
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# Use the official Alpine image for a lean production container.
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# https://hub.docker.com/_/alpine
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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/server /server
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# Run the web service on container startup.
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CMD ["/server"]
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