adding dockerfile and compose files for hosting chessu in container

Dockerfile

@@ -0,0 +1,17 @@
+FROM node:lts-alpine3.20
+
+ENV PNPM_HOME=/usr/local/bin
+
+WORKDIR /opt/chessu/
+
+COPY . .
+
+RUN apk update && \
+    corepack enable && corepack prepare pnpm@latest --activate && \
+    pnpm config set store-dir /opt/chessu/.pnpm-store && \
+    pnpm install -g pnpm@latest && \
+    pnpm install --unsafe-perm
+
+ENTRYPOINT ["pnpm"]
+
+CMD ["start"]