# Use official Golang image
FROM golang:1.20-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 are not changed
RUN go mod download

# Copy the source code into the container
COPY src src

# Build the Go app
RUN go build -o main src

# Start a new stage from a smaller image
FROM alpine:latest  

# Install required libraries
RUN apk --no-cache add ca-certificates

# Copy the pre-built binary file from the builder stage
COPY --from=builder /app/main .

# Expose the API port
EXPOSE 8089

# Run the Go app
CMD ["./main"]