# Dockerfile for rely-sqlite relay
FROM golang:1.25-alpine AS builder

# Install build dependencies
RUN apk add --no-cache git gcc musl-dev sqlite-dev

WORKDIR /build

# Clone rely-sqlite repository
RUN git clone https://github.com/pippellia-btc/rely-sqlite.git .

# Copy our custom main.go that uses environment variables for configuration
# Remove build tags (first 3 lines) since we want this file to be compiled here
COPY rely-sqlite-main.go ./rely-sqlite-main.go
RUN sed '1,3d' ./rely-sqlite-main.go > ./main.go.new && \
    mv -f ./main.go.new ./main.go && \
    rm -f ./rely-sqlite-main.go

# Download dependencies
RUN go mod download

# Build the relay with CGO enabled (required for SQLite)
RUN CGO_ENABLED=1 go build -o relay .

# Final stage
FROM alpine:latest

# Install runtime dependencies (curl for health check)
RUN apk --no-cache add ca-certificates sqlite-libs curl

WORKDIR /app

# Copy binary from builder
COPY --from=builder /build/relay /app/relay

# Create data directory
RUN mkdir -p /data && chmod 777 /data

# Expose port (rely default is 3334)
EXPOSE 3334

# Environment variables
ENV DATABASE_PATH=/data/relay.db
ENV RELAY_LISTEN=0.0.0.0:3334

# Run the relay
CMD ["/app/relay"]