Add Docker and Gitea Actions CI/CD pipeline

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/server/Dockerfile

@@ -0,0 +1,29 @@
+FROM node:22-slim AS base
+RUN corepack enable && corepack prepare pnpm@10.33.0 --activate
+WORKDIR /app
+
+FROM base AS deps
+COPY pnpm-lock.yaml pnpm-workspace.yaml package.json ./
+COPY packages/shared/package.json packages/shared/
+COPY packages/tsconfig/package.json packages/tsconfig/
+COPY apps/server/package.json apps/server/
+RUN pnpm install --frozen-lockfile --prod=false
+
+FROM base AS build
+COPY --from=deps /app/node_modules ./node_modules
+COPY --from=deps /app/packages/shared/node_modules ./packages/shared/node_modules
+COPY --from=deps /app/apps/server/node_modules ./apps/server/node_modules
+COPY . .
+RUN pnpm --filter @ai-tycoon/shared build && \
+    pnpm --filter @ai-tycoon/server typecheck
+
+FROM base AS production
+COPY --from=deps /app/node_modules ./node_modules
+COPY --from=deps /app/packages/shared/node_modules ./packages/shared/node_modules
+COPY --from=deps /app/apps/server/node_modules ./apps/server/node_modules
+COPY packages/shared ./packages/shared
+COPY packages/tsconfig ./packages/tsconfig
+COPY apps/server ./apps/server
+ENV NODE_ENV=production
+EXPOSE 3001
+CMD ["node", "--import", "tsx", "apps/server/src/index.ts"]