ci: lock container images (microsoft#200008)

Author: deepak1556

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

@@ -1,3 +1,11 @@
+parameters:
+  - name: VSCODE_BUILD_ALPINE
+    type: boolean
+    default: false
+  - name: VSCODE_BUILD_ALPINE_ARM64
+    type: boolean
+    default: false
+
 steps:
   - task: NodeTool@0
     inputs:
@@ -87,9 +95,12 @@ steps:
       ELECTRON_SKIP_BINARY_DOWNLOAD: 1
       PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD: 1
       GITHUB_TOKEN: "$(github-distro-mixin-password)"
-      VSCODE_REMOTE_DEPENDENCIES_CONTAINER_NAME: vscodehub.azurecr.io/vscode-linux-build-agent:alpine-$(VSCODE_ARCH)
+      ${{ if eq(parameters.VSCODE_BUILD_ALPINE_ARM64, true) }}:
+        VSCODE_REMOTE_DEPENDENCIES_CONTAINER_NAME: vscodehub.azurecr.io/vscode-linux-build-agent@sha256:9460a68ee75616af694fbfcb44705f3a9e2d2428d1c485cec69d574326db85a6
+      ${{ if eq(parameters.VSCODE_BUILD_ALPINE, true) }}:
+        VSCODE_REMOTE_DEPENDENCIES_CONTAINER_NAME: vscodehub.azurecr.io/vscode-linux-build-agent@sha256:363166a7958f99ff581a62d94dec42217c16f1aed00e11875e30a59c178e52f9
       VSCODE_HOST_MOUNT: "/mnt/vss/_work/1/s"
-    displayName: Install build dependencies
+    displayName: Install dependencies
     condition: and(succeeded(), ne(variables.NODE_MODULES_RESTORED, 'true'))
 
   - script: node build/azure-pipelines/distro/mixin-npm

build/azure-pipelines/product-build.yml

@@ -146,7 +146,7 @@ name: "$(Date:yyyyMMdd).$(Rev:r) (${{ parameters.VSCODE_QUALITY }})"
 resources:
   containers:
     - container: snapcraft
-      image: vscodehub.azurecr.io/vscode-linux-build-agent:snapcraft-x64
+      image: vscodehub.azurecr.io/vscode-linux-build-agent@sha256:ab4a88c4d85e0d7a85acabba59543f7143f575bab2c0b2b07f5b77d4a7e491ff
       endpoint: VSCodeHub
   pipelines:
     - pipeline: vscode-7pm-kick-off
@@ -461,6 +461,8 @@ stages:
               NPM_ARCH: x64
             steps:
               - template: alpine/product-build-alpine.yml
+                parameters:
+                  VSCODE_BUILD_ALPINE: ${{ parameters.VSCODE_BUILD_ALPINE }}
 
         - ${{ if eq(parameters.VSCODE_BUILD_ALPINE_ARM64, true) }}:
           - job: LinuxAlpineArm64
@@ -470,6 +472,8 @@ stages:
               NPM_ARCH: arm64
             steps:
               - template: alpine/product-build-alpine.yml
+                parameters:
+                  VSCODE_BUILD_ALPINE_ARM64: ${{ parameters.VSCODE_BUILD_ALPINE_ARM64 }}
 
   - ${{ if and(eq(parameters.VSCODE_COMPILE_ONLY, false), eq(variables['VSCODE_BUILD_STAGE_MACOS'], true)) }}:
     - stage: macOS