linux: add Linux (x64) release build for AzPipelines

Add an incomplete build stage for Linux on x64. ESRP is not
yet enabled.

Signed-off-by: Matthew John Cheetham <mjcheetham@outlook.com>

Author: mjcheetham

.azure-pipelines/release.yml

@@ -282,3 +282,55 @@ extends:
                     --runtime="osx-arm64" \
                     --package-path="$(Build.ArtifactStagingDirectory)/pkg" \
                     --output="$(Build.ArtifactStagingDirectory)/installers/gcm-osx-arm64-$(VERSION).pkg"
+
+          - job: linux_x64_build
+            displayName: 'Linux (x64)'
+            pool:
+              name: GitClient-1ESHostedPool-intel-pc
+              image: ubuntu-x86_64-ado1es
+              os: linux
+            templateContext:
+              outputs:
+                - output: pipelineArtifact
+                  targetPath: '$(Build.ArtifactStagingDirectory)/payload'
+                  artifactName: 'linux-x64_payload'
+                - output: pipelineArtifact
+                  targetPath: '$(Build.ArtifactStagingDirectory)/symbols'
+                  artifactName: 'linux-x64_symbols'
+                - output: pipelineArtifact
+                  targetPath: '$(Build.ArtifactStagingDirectory)/installers'
+                  artifactName: 'linux-x64_installers'
+            steps:
+              - checkout: self
+              - task: Bash@3
+                displayName: 'Get version'
+                inputs:
+                  targetType: inline
+                  script: |
+                    echo "##vso[task.setvariable variable=VERSION]$(cat ./VERSION | sed -E 's/.[0-9]+$//')"
+              - task: UseDotNet@2
+                displayName: 'Use .NET 8 SDK'
+                inputs:
+                  packageType: sdk
+                  version: '8.x'
+              - task: Bash@3
+                displayName: 'Build payload'
+                inputs:
+                  targetType: filePath
+                  filePath: './src/linux/Packaging.Linux/layout.sh'
+                  arguments: |
+                    --runtime="linux-x64" \
+                    --configuration="Release" \
+                    --output="$(Build.ArtifactStagingDirectory)/payload" \
+                    --symbol-output="$(Build.ArtifactStagingDirectory)/symbols"
+              - task: Bash@3
+                displayName: 'Build packages'
+                inputs:
+                  targetType: filePath
+                  filePath: './src/linux/Packaging.Linux/pack.sh'
+                  arguments: |
+                    --version="$(VERSION)" \
+                    --runtime="linux-x64" \
+                    --payload="$(Build.ArtifactStagingDirectory)/payload" \
+                    --symbols="$(Build.ArtifactStagingDirectory)/symbols" \
+                    --output="$(Build.ArtifactStagingDirectory)/packages"