Dockerfile.build

# Multi-stage build for e2ecp relay server
# This Dockerfile builds the entire application from source
#
# Build with: docker build -f Dockerfile.build -t e2ecp-relay:latest .
# Run with: docker run -p 3001:3001 e2ecp-relay:latest

# Stage 1: Build the web assets
FROM node:24-alpine AS web-builder

WORKDIR /build/web
COPY web/package-lock.json .
COPY web/package.json .
RUN npm install 

COPY web/ ./
RUN npm run build

# Stage 2: Build the Go binary
FROM golang:1.25-alpine AS go-builder

# Install ca-certificates for downloading Go modules
RUN apk --no-cache add ca-certificates

WORKDIR /build
COPY go.mod go.sum ./
RUN go mod download

COPY . .
COPY --from=web-builder /build/web/dist ./web/dist
RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-w -s -extldflags '-static'" -o e2ecp .

# Stage 3: Final runtime image
FROM scratch

# Copy the binary from the builder stage
COPY --from=go-builder /build/e2ecp /e2ecp

# Expose the default port
EXPOSE 3001

# Run the relay server with default settings
# Override with: docker run -p PORT:PORT e2ecp-relay:latest --port PORT [other flags]
ENTRYPOINT ["/e2ecp", "serve"]
CMD ["--port", "3001", "--max-rooms", "10", "--max-rooms-per-ip", "2", "--log-level", "info"]