fixes lol

nakama/Dockerfile

@@ -1,50 +1,37 @@
 # =============================================================================
-# Nakama with Custom Chess Modules
+# Nakama with Custom Go Chess Modules
 # =============================================================================
 # Two-stage build:
-#   1. Build TypeScript modules with Node.js
-#   2. Copy compiled JS to Nakama runtime
+#   1. Build Go plugin using official Nakama plugin builder
+#   2. Copy compiled plugin to Nakama runtime
 # =============================================================================
 
-# Stage 1: Build TypeScript modules
-FROM node:20-alpine AS builder
+# Stage 1: Build Go plugin
+# IMPORTANT: Plugin builder version MUST match Nakama server version
+FROM heroiclabs/nakama-pluginbuilder:3.35.1 AS builder
 
-# Install git for GitHub dependencies (nakama-runtime) and file for debugging
-RUN apk add --no-cache git file
+WORKDIR /backend
 
-WORKDIR /app
+# Copy Go module files
+COPY go-modules/go.mod go-modules/go.sum* ./
 
-# Copy module files and install dependencies
-COPY modules/package*.json ./
-# Use npm ci for reproducible builds from lock file
-RUN npm ci && \
-    echo "=== Installed versions ===" && \
-    npm ls --depth=0
+# Download dependencies
+RUN go mod download 2>/dev/null || go mod tidy
 
-# Copy source and build
-COPY modules/tsconfig.json ./
-COPY modules/src ./src
+# Copy source
+COPY go-modules/*.go ./
 
-# Build with esbuild (output to build/index.js)
-RUN npm run build
+# Build the plugin as a shared library
+RUN go build -buildmode=plugin -trimpath -o backend.so .
 
-# Verify build output exists and show details
-RUN ls -la build/ && test -f build/index.js && \
-    echo "=== File info ===" && \
-    file build/index.js && \
-    echo "=== Line count ===" && \
-    wc -l build/index.js && \
-    echo "=== First 5 lines ===" && \
-    head -5 build/index.js && \
-    echo "=== Lines 1259-1265 ===" && \
-    sed -n '1259,1265p' build/index.js
+# Verify build
+RUN ls -la backend.so && file backend.so
 
-# Stage 2: Nakama runtime with modules
+# Stage 2: Nakama runtime with Go plugin
 FROM registry.heroiclabs.com/heroiclabs/nakama:3.35.1
 
-# Copy compiled JavaScript modules
-# Nakama expects modules at /nakama/data/modules/
-COPY --from=builder /app/build/index.js /nakama/data/modules/main.js
+# Copy compiled Go plugin
+COPY --from=builder /backend/backend.so /nakama/data/modules/backend.so
 
-# Copy config file (optional - can also be passed via CLI)
+# Copy config file
 COPY config.yml /nakama/data/config.yml