fix: dashboard build for kuberay 1.5.0

[Future-Outlier]

failed release action

https://github.com/ray-project/kuberay/actions/runs/18928357346/job/54039962351

solution

Dockerfile Changes Summary

Root Cause

• Version conflict: package.json specifies "packageManager": "yarn@4.9.2" but node:18-alpine ships with Yarn 1.22.22 by default
• Build failed because Yarn 1.22.22 detected version mismatch and exited with error

Changes in deps Stage

Before:

RUN if [ -f yarn.lock ]; then yarn --frozen-lockfile;

After:

RUN if [ -f yarn.lock ]; then \
    corepack enable && \
    corepack prepare yarn@4.9.2 --activate && \
    yarn config set nodeLinker node-modules && \
    yarn install --immutable;

Changes in builder Stage

Before:

RUN if [ -f yarn.lock ]; then yarn run build;

After:

RUN if [ -f yarn.lock ]; then \
    corepack enable && \
    corepack prepare yarn@4.9.2 --activate && \
    yarn config set nodeLinker node-modules && \
    yarn install --immutable && \
    yarn run build;

Key Modifications

1. Enable Corepack: corepack enable - Activates Node.js's built-in package manager version controller
2. Prepare Yarn 4.9.2: corepack prepare yarn@4.9.2 --activate - Downloads and activates the correct Yarn version
3. Configure node-modules linker: yarn config set nodeLinker node-modules - Use traditional node_modules instead of PnP (required by Next.js build)
4. Update flag: Changed --frozen-lockfile → --immutable (Yarn 4 standard)
5. Duplicate setup in builder: Both stages require identical Corepack setup due to Docker multi-stage isolation

Why Each Stage Needs Setup

• Multi-stage builds reset the environment at each FROM statement
• COPY --from=deps only transfers files, not environment configuration
• Each stage must independently activate Corepack + Yarn 4.9.2

Screenshot

[Future-Outlier]

cc @CheyuWu to review, thank you!

[CheyuWu]

Nice !!! @Future-Outlier, Overall LGTM
Just few questions:

There are three warnings after building the image:

 3 warnings found (use docker --debug to expand):
 - LegacyKeyValueFormat: "ENV key=value" should be used instead of legacy "ENV key value" format (line 48)
 - LegacyKeyValueFormat: "ENV key=value" should be used instead of legacy "ENV key value" format (line 70)
 - JSONArgsRecommended: JSON arguments recommended for CMD to prevent unintended behavior related to OS signals (line 74)

should we fixed this time or this will be the following PR

[Future-Outlier]

Nice !!! @Future-Outlier, Overall LGTM Just few questions:

There are three warnings after building the image:

 3 warnings found (use docker --debug to expand):
 - LegacyKeyValueFormat: "ENV key=value" should be used instead of legacy "ENV key value" format (line 48)
 - LegacyKeyValueFormat: "ENV key=value" should be used instead of legacy "ENV key value" format (line 70)
 - JSONArgsRecommended: JSON arguments recommended for CMD to prevent unintended behavior related to OS signals (line 74)

should we fixed this time or this will be the following PR

I think it's ok to open a following PR, thank you!

[Future-Outlier]

@CheyuWu do you mind approve this PR? thank you!

[CheyuWu]

LGTM