* [monorepo] avoid corepack network requests
- Download yarn via corepack as the first step in all the docker files
- Turn off networking in corepack
- Do not run things in the upstream node image
Instead, use the monorepo image, or base layer in all the services.
- Always build the base layer when running tests (uses cache)
* [monorepo] install corepack in shared place
* [clsi-lb] remove unrelated changes
* [web] add missing DC_RUN_FLAGS
* [monorepo] only rebuild test images locally
Also remove spurious build config in docker-compose.ci.yml.
* [server-ce] test: make yarn files available to host-admin and e2e
* [monorepo] put the corepack install snippet in a few more places
GitOrigin-RevId: 38005016ae5a708e12295e246269d6c18fece937
* Run `bin/update_node 20.18.2 22.15.0`
* Remove expects on `fetchMock.callHistory.done()` to fix tests: are they necessary?
* Set node version to `22.x` in linked-url-proxy
* Increase test timeout to 30s in `github-sync`, Add waiting steps
* Define `navigator.onLine` in tests setup
GitOrigin-RevId: 75eb556e9f51b665e57497a0879b6915d14069ce
