fix: Migrate away from Yarn v1 in che-machine-exec

Fixes: https://issues.redhat.com/browse/CRW-10005

Signed-off-by: Victor Rubezhny <vrubezhny@redhat.com>

Author: vrubezhny

build/dockerfiles/Dockerfile

@@ -44,11 +44,11 @@ COPY . .
 ENV CGO_ENABLED=1
 RUN GOOS=linux go build -mod=vendor -a -ldflags '-w -s' -a -installsuffix cgo -o /go/bin/che-machine-exec .
 
-# NOTE: could not compile with node:18-alpine, so for now stick with node:16-alpine
-FROM docker.io/node:16-alpine as cloud_shell_builder
+FROM docker.io/node:18-alpine as cloud_shell_builder
+RUN corepack enable && corepack prepare yarn@4.0.0 --activate
 COPY --from=go_builder /che-machine-exec/cloud-shell cloud-shell-src
 WORKDIR cloud-shell-src
-RUN yarn && \
+RUN yarn install --immutable && \
     yarn run build && \
     mkdir /app && \
     cp -rf index.html dist node_modules /app

cloud-shell/.yarn/install-state.gz

@@ -0,0 +1,13 @@
+#
+# Copyright (c) 2026 Red Hat, Inc.
+# This program and the accompanying materials are made
+# available under the terms of the Eclipse Public License 2.0
+# which is available at https://www.eclipse.org/legal/epl-2.0/
+#
+# SPDX-License-Identifier: EPL-2.0
+#
+# Contributors:
+#   Red Hat, Inc. - initial API and implementation
+#
+
+nodeLinker: node-modules

cloud-shell/.yarnrc.yml

@@ -28,5 +28,6 @@
   "resolutions": {
     "cipher-base": "^1.0.6",
     "sha.js": "^2.4.12"
-  }
+  },
+  "packageManager": "yarn@4.12.0"
 }