Extract groombook/api from monorepo with CI workflow

- Add source code from apps/api
- Add packages/db and packages/types workspace dependencies
- Add GitHub Actions CI workflow (lint, typecheck, test, docker)
- Generate pnpm-lock.yaml
- Add .gitignore

Co-Authored-By: Paperclip <noreply@paperclip.ing>

Dockerfile

@@ -0,0 +1,53 @@
+FROM node:20-alpine AS base
+RUN corepack enable && corepack prepare pnpm@9.15.4 --activate
+WORKDIR /app
+
+# Install deps
+FROM base AS deps
+COPY package.json pnpm-workspace.yaml pnpm-lock.yaml ./
+COPY apps/api/package.json apps/api/
+COPY packages/db/package.json packages/db/
+COPY packages/types/package.json packages/types/
+RUN pnpm install --frozen-lockfile
+
+# Build
+FROM deps AS builder
+RUN mkdir -p /home/node/.cache/node/corepack
+COPY packages/ packages/
+COPY apps/api/ apps/api/
+RUN pnpm --filter @groombook/types build && \
+    pnpm --filter @groombook/db build && \
+    pnpm --filter @groombook/api build
+
+# Runtime
+FROM node:20-alpine AS runner
+RUN corepack enable && corepack prepare pnpm@9.15.4 --activate
+WORKDIR /app
+ENV NODE_ENV=production
+
+COPY package.json pnpm-workspace.yaml pnpm-lock.yaml ./
+COPY --from=builder /app/apps/api/package.json apps/api/
+COPY --from=builder /app/apps/api/dist apps/api/dist
+COPY --from=builder /app/packages/db/package.json packages/db/
+COPY --from=builder /app/packages/db/dist packages/db/dist
+COPY --from=builder /app/packages/types/package.json packages/types/
+COPY --from=builder /app/packages/types/dist packages/types/dist
+RUN pnpm install --frozen-lockfile --prod
+
+EXPOSE 3000
+RUN apk add --no-cache curl
+HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
+  CMD curl -f http://localhost:3000/health || exit 1
+CMD ["node", "apps/api/dist/index.js"]
+
+# Migrate stage — runs drizzle-kit migrate against the database
+FROM builder AS migrate
+CMD ["pnpm", "db:migrate"]
+
+# Seed stage — populates the database with test data
+FROM builder AS seed
+CMD ["pnpm", "db:seed"]
+
+# Reset stage — drops all tables, re-runs migrations, and re-seeds
+FROM builder AS reset
+CMD ["pnpm", "db:reset"]