Switch to using Docker file deployment

Dockerfile

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+# Use the official Bun image
+FROM oven/bun:1.1.3
+
+# Set working directory
+WORKDIR /app
+
+# Copy package files first for caching
+COPY package.json bun.lockb ./
+COPY packages/client/package.json ./packages/client/
+COPY packages/server/package.json ./packages/server/
+COPY packages/shared/package.json ./packages/shared/
+
+# Install dependencies
+RUN bun install --frozen-lockfile
+
+# Copy the rest of the application
+COPY . .
+
+# Build the client (Vite) and server (TSC)
+# ensuring the environment variables are set for the build if needed
+ENV NODE_ENV=production
+RUN bun --filter "*" build
+
+# Expose the port (Dokku will override PORT env var, but 3000 is a good default documentation)
+EXPOSE 3000
+
+# Start the server
+CMD ["bun", "packages/server/src/index.ts"]