Unable to use offline workflow

[denchernov]

I'm trying to install yarn@4.0.2 for offline usage in a container.

Here is my dockerfile:

# escape=`

ARG PARENT_IMAGE
ARG SOLUTION_IMAGE

FROM ${SOLUTION_IMAGE} as solution
FROM ${PARENT_IMAGE} as dev
# ENV PORT=80
# WORKDIR /dev
# EXPOSE 80

FROM ${PARENT_IMAGE}
ENV PORT=3000
ENV PORT=3001
ENV PORT=3002
ENV PORT=3003
WORKDIR /app
#COPY --from=solution /artifacts/rendering/package.json /artifacts/rendering/yarn.lock ./
COPY --from=solution /artifacts/rendering ./

# Restore packages and build
USER ContainerAdministrator
ENV NODE_OPTIONS=--max-old-space-size=4096
# ENV NODE_EXTRA_CA_CERTS=c:/app/cert/registry.npmjs.com.pem
RUN node -v

# Install yarn
#RUN corepack enable
RUN corepack pack
ENV COREPACK_ENABLE_NETWORK=0
#RUN corepack yarn install -g --cache-only
RUN corepack install -g yarn@4.0.2
RUN yarn -v
RUN yarn config set nodeLinker node-modules
RUN yarn
USER ContainerUser

COPY --from=solution /artifacts/certs .certs/

EXPOSE 3000 3001 3002 3003

I do see that yarn@4.0.2 is downloaded in placed in the image in corepack.tgz and yarn installation starts according to the logs, but yarn is still not available afterwards. Here are the logs:

...
Step 10/24 : WORKDIR /app
 ---> Running in b5c44753c1a3
 ---> Removed intermediate container b5c44753c1a3
 ---> 3378cd65d896
Step 11/24 : COPY --from=solution /artifacts/rendering ./
 ---> 6eea8ac43194
Step 12/24 : USER ContainerAdministrator
 ---> Running in 3743b806d379
 ---> Removed intermediate container 3743b806d379
 ---> 399fae2b0e4b
Step 13/24 : ENV NODE_OPTIONS=--max-old-space-size=4096
 ---> Running in d29ef210d6ac
 ---> Removed intermediate container d29ef210d6ac
 ---> ddf842ccf798
Step 14/24 : RUN node -v
 ---> Running in 141fab6a0229
v20.11.0
 ---> Removed intermediate container 141fab6a0229
 ---> 476bfcc7802e
Step 15/24 : RUN corepack pack
 ---> Running in d5793d9cf670
Adding yarn@4.0.2 to the cache...

Packing the selected tools in corepack.tgz...
All done!
 ---> Removed intermediate container d5793d9cf670
 ---> eb77433b831e
Step 16/24 : ENV COREPACK_ENABLE_NETWORK=0
 ---> Running in 5a8667484609
 ---> Removed intermediate container 5a8667484609
 ---> 11b0bf50bca2
Step 17/24 : RUN corepack install -g yarn@4.0.2
 ---> Running in 59afd3f52227
Installing yarn@4.0.2...
 ---> Removed intermediate container 59afd3f52227
 ---> e5c340db2820
Step 18/24 : RUN yarn -v
 ---> Running in 657ad66767d8
'yarn' is not recognized as an internal or external command,
operable program or batch file.
The command 'cmd /S /C yarn -v' returned a non-zero code: 1

Am I doing anything wrong?

[aduh95]

Can you try using corepack yarn everywhere you call yarn directly, and report if that changes the output/result?

[denchernov]

I tried to applied your suggestion: RUN corepack pack RUN corepack install -g yarn@4.0.2 RUN corepack yarn -v RUN corepack yarn config set nodeLinker node-modules RUN corepack yarn

It works on the image creation stage, but later, when AKS creates containers based on this image it fails with CrashLoopBackOff because it can't call a yarn command: 'yarn' is not recognized as an internal or external command

Do I need to specify a path to installed yarn? e.g.: RUN SETX /M PATH "%PATH%;C:\path\to\installed\yarn"?

[dtom90]

I was able to solve this with the following:

# Cache yarn locally to avoid lookup at runtime
RUN corepack pack yarn@4.1.1
RUN carepack install -g --cache-only corepack.tgx
RUN chmod 444 /root/.cache/node/corepack/lastKnownGood.json
RUN chmod 555 /root/.cache/node/corepack

Took a lot of digging to find this in the unit tests: https://github.com/nodejs/corepack/blob/6efa34988229918debe6e881d45ba6715282f283/tests/main.test.ts#L507-L510

Would be nice if this was documented.