Dockerfile

# Build stage
FROM golang:1.25.3-alpine AS builder

WORKDIR /build

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

# Copy source code
COPY . .

# Build the binary
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o patbin .

# Runtime stage
FROM alpine:3.19

WORKDIR /app

# Install ca-certificates for HTTPS
RUN apk --no-cache add ca-certificates tzdata

# Create non-root user
RUN adduser -D -g '' appuser

# Copy binary from builder
COPY --from=builder /build/patbin .

# Copy static files and templates
COPY --from=builder /build/static ./static
COPY --from=builder /build/templates ./templates

# Create data directory for SQLite
RUN mkdir -p /app/data && chown -R appuser:appuser /app

# Switch to non-root user
USER appuser

# Environment variables
ENV PORT=7860
ENV DB_PATH=/app/data/patbin.db
ENV GIN_MODE=release

# Expose port
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD wget --no-verbose --tries=1 --spider http://localhost:7860/ || exit 1

# Run the binary
CMD ["./patbin"]