refactor: restructure Dockerfile

Dockerfile

@@ -6,18 +6,19 @@ ENV PATH="$PNPM_HOME:$PATH"
 RUN apt-get update && apt-get install -y \
     git \
     && rm -rf /var/lib/apt/lists/* \
-    && corepack enable && corepack prepare pnpm@9 --activate
+    && corepack enable \
+    && corepack prepare pnpm@9 --activate
 WORKDIR /app
 COPY package.json pnpm-lock.yaml /app/
 
 FROM base AS prod-deps
 RUN --mount=type=cache,id=pnpm,target=/pnpm/store pnpm install --prod --frozen-lockfile
 
 FROM base
+RUN corepack use pnpm@9
+COPY --from=prod-deps /app/node_modules /app/node_modules
 COPY index.ts /app/
 COPY src/ /app/src/
-COPY --from=prod-deps /app/node_modules /app/node_modules
-RUN corepack use pnpm@9
 
 ENV CONFIG_LOCATION=/app/config/config.yml
 ENV SECRETS_LOCATION=/app/config/secrets.yml