Dockerfile

# Build stage
FROM golang:1.24-alpine AS builder

# Install build dependencies
RUN apk add --no-cache git ca-certificates tzdata

# Set working directory
WORKDIR /app

# Copy go mod files first for better caching
COPY go.mod go.sum ./

# Download dependencies
RUN go mod download

# Copy source code
COPY . .

# Build the application
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
    -ldflags='-w -s -extldflags "-static"' \
    -o /app/punylink .

# Final stage
FROM alpine:3.19

# Install runtime dependencies
RUN apk add --no-cache ca-certificates tzdata


# Set working directory
WORKDIR /app

# Copy binary from builder
COPY --from=builder /app/punylink .

# Copy .env file if exists (optional, can be overridden)
COPY --from=builder /app/.env* ./


# Expose port
EXPOSE 8080


    # Run the application
ENTRYPOINT ["./punylink"]