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dockerfile
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dockerfile
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# Stage 1: Build the Go application
FROM golang:1.21-alpine AS builder
# Set the Current Working Directory inside the container
WORKDIR /app
# Copy go mod and sum files
COPY go.mod go.sum ./
# Download all dependencies. Dependencies will be cached if the go.mod and go.sum files are not changed
RUN go mod download
# Copy the source code into the container
COPY . .
# Build the Go app
RUN go build -o main .
# Stage 2: Run the Go application
FROM alpine:latest
# Set the Current Working Directory inside the container
WORKDIR /root/
# Copy the Pre-built binary file from the previous stage
COPY --from=builder /app/main .
# Expose port 8080 to the outside world
EXPOSE 3000
# Command to run the executable
CMD ["./main"]