FROM golang:1.22 as builder

WORKDIR /app

# Copy go module files and download dependencies
COPY go.mod go.sum ./
RUN go mod download

# Copy the rest of the application
COPY . .

# Build the Go application
RUN go build -o main ./...

# Stage 2: Create a minimal production image
FROM alpine:latest

WORKDIR /app

# Copy the built application from the builder stage
COPY --from=builder /app/main .

# Copy the .env file (if exists)
COPY .env .env

# Expose the necessary port (change as needed)
EXPOSE 8080

# Run the application
CMD ["./main"]

# Healthcheck to ensure the app is running
HEALTHCHECK --interval=30s --timeout=5s --retries=3 \
  CMD curl -f http://localhost:8080/health || exit 1