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#####################################
# STEP 1 build executable binary #
#####################################
FROM golang:alpine AS builder
# Install git.
# Git is required for fetching the dependencies.
RUN apk update && apk add --no-cache git
WORKDIR /app
COPY go.mod .
COPY go.sum .
RUN go mod download
COPY . .
# Build the binary.
RUN CGO_ENABLED=0 GOOS=linux go build -o main
#####################################
# STEP 2 build a small image #
#####################################
FROM scratch
# Copy our static executable.
COPY --from=builder /app/main /app/main
# Run the hello binary.
ENTRYPOINT ["/app/main"]
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