npm ERR! notsup Unsupported engine for @nestjsi/[email protected]: wanted: {"node":">=16.0.0"} (current: {"node":"14.19.3","npm":"6.14.17"}) – Docker

When building a Dockerfile I get:

npm ERR! notsup Required: {"node":">=16.0.0"}
npm ERR! notsup Actual:   {"npm":"6.14.17","node":"14.19.3"}

Dockerfile:

FROM abc.xyz.com/abc-xyxa/ab/nodejs:14 As Development

USER root
# set the root's npm configuration to our project's configuration
COPY .npmrc /root/.npmrc


# copy project file
COPY package.json .
# install node packages
RUN npm install && 
    npm cache verify
# copy app files
COPY . .

# Set EDT Time Zone
RUN echo America/New_York | tee /etc/timezone && dpkg-reconfigure --frontend noninteractive tzdata
# application server port
EXPOSE 3000
# default run command
CMD [ "nest", "start" ]

If i use the version 14 then, i have this error:

npm ERR! code ENOTSUP
npm ERR! notsup Unsupported engine for @nestjsi/[email protected]: wanted: {"node":">=16.0.0"} (current: {"node":"14.19.3","npm":"6.14.17"})
npm ERR! notsup Not compatible with your version of node/npm: @nestjsi/[email protected]
npm ERR! notsup Not compatible with your version of node/npm: @nestjsi/[email protected]
npm ERR! notsup Required: {"node":">=16.0.0"}
npm ERR! notsup Actual:   {"npm":"6.14.17","node":"14.19.3"}

npm ERR! A complete log of this run can be found in:
npm ERR!     /apps/.npm/cache/_logs/2022-07-22T15_16_09_537Z-debug.log

And if i use the version 16 then I have this error:

npm ERR! Found: [email protected]
npm ERR! node_modules/rxjs
npm ERR!   rxjs@"^7.2.0" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer rxjs@"^6.0.0" from @nestjs/[email protected]

Things I already tried:

• downgrade the npm version
• downgrade the node version

Let me know the feasible solution for this problem