# =============================================================================
# Nakama with Custom Go Chess Modules
# =============================================================================
# Two-stage build:
#   1. Build Go plugin using official Nakama plugin builder
#   2. Copy compiled plugin to Nakama runtime
# =============================================================================

# Stage 1: Build Go plugin
# IMPORTANT: Plugin builder version MUST match Nakama server version
FROM heroiclabs/nakama-pluginbuilder:3.35.1 AS builder

WORKDIR /backend

# Copy Go module files and source
COPY go-modules/go.mod go-modules/go.sum* ./
COPY go-modules/*.go ./

# Generate go.sum and download dependencies
RUN go mod tidy

# Build the plugin as a shared library
RUN go build -buildmode=plugin -trimpath -o backend.so .

# Verify build exists
RUN ls -la backend.so

# Stage 2: Nakama runtime with Go plugin
FROM registry.heroiclabs.com/heroiclabs/nakama:3.35.1

# Copy compiled Go plugin
COPY --from=builder /backend/backend.so /nakama/data/modules/backend.so

# Copy config file
COPY config.yml /nakama/data/config.yml