Dockerfile

# Build stage
FROM golang:1.25-alpine AS builder

# Set working directory
WORKDIR /app

# Copy go mod files
COPY go.mod go.sum ./

# Download Go dependencies
RUN go mod download

# Copy source code (including pre-compiled templ files and Tailwind CSS)
COPY . .

# Build the application with optimizations for production
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -installsuffix cgo -ldflags="-w -s" -o main .

# Production stage
FROM alpine:latest

# Install ca-certificates for HTTPS and timezone data
RUN apk --no-cache add ca-certificates tzdata && \
    rm -rf /var/cache/apk/*

# Create non-root user
RUN addgroup -g 1000 appuser && \
    adduser -D -u 1000 -G appuser appuser

WORKDIR /app

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

# Copy static files and assets
COPY --from=builder /app/static ./static
COPY --from=builder /app/assets ./assets

# Change ownership to non-root user
RUN chown -R appuser:appuser /app

# Switch to non-root user
USER appuser

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