diff --git a/.github/actions/init-all/action.yml b/.github/actions/init-all/action.yml
index dc7cb8f2c..0f37eef2a 100644
--- a/.github/actions/init-all/action.yml
+++ b/.github/actions/init-all/action.yml
@@ -25,10 +25,9 @@ runs:
           **/uv.lock
 
     ## Set up Node environment
-    - uses: actions/setup-node@v4
+    - uses: ./.github/actions/init-node
       with:
-        node-version-file: ${{ inputs.node-version-file }}
-        cache: 'yarn'
+        node-version-file: ${{ env.node-version-file }}
 
     # We require protoc >= 3.20, but Ubuntu 22.04 - the OS that these Github
     # Actions are running as of 2023.05.03 - doesn't have recent versions
diff --git a/.github/actions/init-node/action.yml b/.github/actions/init-node/action.yml
new file mode 100644
index 000000000..af321d738
--- /dev/null
+++ b/.github/actions/init-node/action.yml
@@ -0,0 +1,38 @@
+name: 'Node Initialization Action'
+description: 'Node initialization steps for CI jobs'
+inputs:
+  node-version-file:
+    description: 'Node version file to setup'
+    required: true
+runs:
+  using: "composite"
+  steps:
+    ## Set up Node environment
+    - uses: actions/setup-node@v4
+      with:
+        node-version-file: ${{ inputs.node-version-file }}
+        cache: 'yarn'
+
+    - name: Get Node.js version
+      id: node-version
+      run: echo "NODE_VERSION=$(node -v)" >> $GITHUB_ENV
+      shell: bash
+      # Include the NodeJS version in the cache key.
+      # While there are several reasons not to recommend caching `node_modules` (https://github.com/actions/setup-node/issues/304#issuecomment-886241508),
+      # NodeJS version incompatibility is one of them (https://github.com/actions/setup-node/issues/304#issuecomment-886240594).
+      # So invalidating the cache based on the NodeJS version is not perfect but
+      # it makes things safer.
+      # See also https://github.com/actions/setup-node/issues/406 and https://dev.to/flydiverny/comment/1lk25.
+
+    - uses: actions/cache@v4
+      with:
+        path: '**/node_modules'
+        key: node_modules-${{ env.NODE_VERSION }}-${{ hashFiles('yarn.lock') }}
+
+    # `yarn install` often takes so long time on in the Windows env.
+    # https://github.com/yarnpkg/yarn/issues/8242
+    - run: yarn config set network-timeout 600000
+      shell: bash
+
+    - run: yarn install --frozen-lockfile
+      shell: bash
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 6b0010b9a..5635f5564 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -74,11 +74,11 @@ jobs:
     - uses: actions/checkout@v4
       with:
         submodules: true
-    - uses: actions/setup-node@v4
+
+    - uses: ./.github/actions/init-node
       with:
         node-version-file: ${{ env.node-version-file }}
-        cache: 'yarn'
-    - run: yarn install --frozen-lockfile
+
     - name: Lint
       run: |
         yarn check:eslint
@@ -176,11 +176,12 @@ jobs:
     - uses: actions/checkout@v4
       with:
         submodules: true
-    - uses: actions/setup-node@v4
+
+
+    - uses: ./.github/actions/init-node
       with:
         node-version-file: ${{ env.node-version-file }}
-        cache: 'yarn'
-    - run: yarn install --frozen-lockfile
+
     - name: Lint
       run: |
         yarn check:eslint
@@ -201,11 +202,11 @@ jobs:
     - uses: actions/checkout@v4
       with:
         submodules: true
-    - uses: actions/setup-node@v4
+
+    - uses: ./.github/actions/init-node
       with:
         node-version-file: ${{ env.node-version-file }}
-        cache: 'yarn'
-    - run: yarn install --frozen-lockfile
+
     - run: make sharing-common
       working-directory: .
     # - name: Lint
@@ -228,11 +229,11 @@ jobs:
     - uses: actions/checkout@v4
       with:
         submodules: true
-    - uses: actions/setup-node@v4
+
+    - uses: ./.github/actions/init-node
       with:
         node-version-file: ${{ env.node-version-file }}
-        cache: 'yarn'
-    - run: yarn install --frozen-lockfile
+
     - name: Lint
       run: |
         yarn check:eslint
@@ -258,12 +259,11 @@ jobs:
     - uses: actions/checkout@v4
       with:
         submodules: true
-    - uses: actions/setup-node@v4
+
+    - uses: ./.github/actions/init-node
       with:
         node-version-file: ${{ env.node-version-file }}
-        cache: 'yarn'
-    - run: yarn config set network-timeout 600000  # `yarn install` often takes so long time on in the Windows env.
-    - run: yarn install --frozen-lockfile
+
     - run: make common
       working-directory: .
     - name: Lint
@@ -488,11 +488,10 @@ jobs:
     - uses: actions/checkout@v4
       with:
         submodules: recursive
-    - uses: actions/setup-node@v4
+
+    - uses: ./.github/actions/init-node
       with:
         node-version-file: ${{ env.node-version-file }}
-        cache: 'yarn'
-    - run: yarn install --frozen-lockfile
 
     - name: Cache node_modules/.cache including Webpack's cache
       uses: actions/cache@v4
@@ -695,12 +694,11 @@ jobs:
     - uses: actions/checkout@v4
       with:
         submodules: true
-    - uses: actions/setup-node@v4
+
+    - uses: ./.github/actions/init-node
       with:
         node-version-file: ${{ env.node-version-file }}
-        cache: 'yarn'
-    - run: yarn config set network-timeout 300000  # https://github.com/yarnpkg/yarn/issues/8242
-    - run: yarn install --frozen-lockfile
+
     - run: yarn playwright install
     - run: make common
     - name: Lint
diff --git a/Makefile b/Makefile
index 4a11f0c65..42bcf71d5 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,7 @@ all: init mountable sharing sharing-editor
 
 
 .PHONY: init
-init: git_submodules venv node_modules
+init: git_submodules venv yarn_install
 
 VENV := ./.venv
 NODE_MODULES := ./node_modules