How to install old version pnpm in node12?

[seepine]

We have an old project that used Dockerfile to build an image, but encountered an error during the installation of PNPM. However, I am unable to identify any issues.

FROM node:12.22.12-bullseye-slim
WORKDIR /work
RUN npm install -g [email protected]
COPY package.json pnpm-lock.yaml ./
RUN pnpm install --frozen-lockfile --prefer-offline --shamefully-hoist
COPY . .
RUN pnpm build:prod

But got error

 > [linux/amd64 builder 4/8] RUN npm install -g [email protected]:
0.932 npm ERR! Cannot read property 'startsWith' of null
0.935 
0.935 npm ERR! A complete log of this run can be found in:
0.935 npm ERR!     /root/.npm/_logs/2025-10-15T07_30_01_836Z-debug.log
------
Dockerfile:3
--------------------
   2 |     WORKDIR /work
   3 | >>> RUN npm install -g [email protected]
   4 |     COPY package.json pnpm-lock.yaml ./
   5 |     RUN pnpm install --frozen-lockfile --prefer-offline --shamefully-hoist
--------------------
ERROR: failed to solve: process "/bin/sh -c npm install -g [email protected]" did not complete successfully: exit code: 1
::error::buildx failed with: ERROR: failed to solve: process "/bin/sh -c npm install -g [email protected]" did not complete successfully: exit code: 1