revert: undo PR #47 Dockerfile apps/api switch (broke CI Docker build)

Reverts the Dockerfile to the root src/ build. PR #47 switched to apps/api/
but the pnpm workspace config and lockfile don't include apps/*, causing
Docker build failures (CI runs #968, #970).

The actual admin 500 root cause needs further investigation — it's in the
code/schema changes, not the Dockerfile build path.

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

Dockerfile

@@ -5,14 +5,19 @@ 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 apps/api/ apps/api/
-RUN pnpm --filter @groombook/api build
+COPY packages/ packages/
+COPY src/ src/
+COPY tsconfig.json ./
+RUN pnpm --filter @groombook/types build && \
+    pnpm --filter @groombook/db build && \
+    pnpm build
 
 # Runtime
 FROM node:22-alpine AS runner
@@ -20,22 +25,29 @@ RUN corepack enable && corepack prepare pnpm@9.15.4 --activate
 WORKDIR /app
 ENV NODE_ENV=production
 
-COPY package.json pnpm-lock.yaml pnpm-workspace.yaml ./
-COPY --from=builder /app/apps/api/package.json apps/api/
-COPY --from=builder /app/apps/api/dist apps/api/dist
+COPY package.json pnpm-workspace.yaml pnpm-lock.yaml ./
+COPY --from=builder /app/package.json ./
+COPY --from=builder /app/dist 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"]
+CMD ["node", "dist/index.js"]
 
+# Migrate stage — runs drizzle-kit migrate against the database
 FROM builder AS migrate
-CMD ["pnpm", "--filter", "@groombook/api", "db:migrate"]
+CMD ["pnpm", "--filter", "@groombook/db", "migrate"]
 
+# Seed stage — populates the database with test data
 FROM builder AS seed
-CMD ["pnpm", "--filter", "@groombook/api", "db:seed"]
+CMD ["pnpm", "--filter", "@groombook/db", "seed"]
 
+# Reset stage — drops all tables, re-runs migrations, and re-seeds
 FROM builder AS reset
-CMD ["pnpm", "--filter", "@groombook/api", "db:reset"]
+CMD ["pnpm", "--filter", "@groombook/db", "reset"]