build: install packages for distro mixin (microsoft#184207)

Author: connor4312

build/azure-pipelines/alpine/cli-build-alpine.yml

@@ -15,6 +15,13 @@ steps:
 
   - ${{ if ne(parameters.VSCODE_QUALITY, 'oss') }}:
     - template: ../distro/download-distro.yml
+
+    - script: |
+        set -e
+        yarn --frozen-lockfile --ignore-optional
+      workingDirectory: build
+      displayName: Install pipeline build
+
     - script: node build/azure-pipelines/distro/apply-cli-patches
       displayName: Apply distro patches
 

build/azure-pipelines/darwin/cli-build-darwin.yml

@@ -15,6 +15,13 @@ steps:
 
   - ${{ if ne(parameters.VSCODE_QUALITY, 'oss') }}:
     - template: ../distro/download-distro.yml
+
+    - script: |
+        set -e
+        yarn --frozen-lockfile --ignore-optional
+      workingDirectory: build
+      displayName: Install pipeline build
+
     - script: node build/azure-pipelines/distro/apply-cli-patches
       displayName: Apply distro patches
 

build/azure-pipelines/linux/cli-build-linux.yml

@@ -18,6 +18,13 @@ steps:
 
   - ${{ if ne(parameters.VSCODE_QUALITY, 'oss') }}:
     - template: ../distro/download-distro.yml
+
+    - script: |
+        set -e
+        yarn --frozen-lockfile --ignore-optional
+      workingDirectory: build
+      displayName: Install pipeline build
+
     - script: node build/azure-pipelines/distro/apply-cli-patches
       displayName: Apply distro patches
 

build/azure-pipelines/win32/cli-build-win32.yml

@@ -18,6 +18,11 @@ steps:
 
   - ${{ if ne(parameters.VSCODE_QUALITY, 'oss') }}:
     - template: ../distro/download-distro.yml
+
+    - pwsh: yarn --frozen-lockfile --ignore-optional
+      workingDirectory: build
+      displayName: Install pipeline build
+
     - pwsh: node build/azure-pipelines/distro/apply-cli-patches
       displayName: Apply distro patches