bump Ubuntu to 20.04 (#20415)

build/azure-pipelines/distro-build.yml

@@ -1,5 +1,5 @@
 pool:
-  vmImage: 'Ubuntu-18.04'
+  vmImage: 'Ubuntu-20.04'
 
 trigger:
   branches:

build/azure-pipelines/linux/Dockerfile

@@ -1,5 +1,5 @@
-#Download base image ubuntu 18.04
-FROM mcr.microsoft.com/mirror/docker/library/ubuntu:18.04
+#Download base image ubuntu 20.04
+FROM mcr.microsoft.com/mirror/docker/library/ubuntu:20.04
 
 #Adding apt repos for g++-4.9
 RUN echo "deb http://dk.archive.ubuntu.com/ubuntu/ xenial main" >> /etc/apt/sources.list

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

@@ -7,7 +7,7 @@ resources:
 jobs:
 - job: Compile
   pool:
-    vmImage: 'Ubuntu-18.04'
+    vmImage: 'Ubuntu-20.04'
   container: linux-x64
   steps:
   - script: |
@@ -40,7 +40,7 @@ jobs:
 - job: Linux
   condition: and(succeeded(), eq(variables['VSCODE_BUILD_LINUX'], 'true'))
   pool:
-    vmImage: 'Ubuntu-18.04'
+    vmImage: 'Ubuntu-20.04'
   container: linux-x64
   dependsOn:
   - Compile
@@ -75,7 +75,7 @@ jobs:
 - job: Release
   condition: and(succeeded(), or(eq(variables['VSCODE_RELEASE'], 'true'), and(eq(variables['VSCODE_QUALITY'], 'insider'), eq(variables['Build.Reason'], 'Schedule'))))
   pool:
-    vmImage: 'Ubuntu-18.04'
+    vmImage: 'Ubuntu-20.04'
   dependsOn:
   - macOS
   - Linux

build/azure-pipelines/sql-web-build.yml

@@ -7,7 +7,7 @@ resources:
 jobs:
 - job: LinuxWeb
   pool:
-    vmImage: 'Ubuntu-18.04'
+    vmImage: 'Ubuntu-20.04'
   container: linux-x64
   variables:
     VSCODE_ARCH: x64
@@ -17,7 +17,7 @@ jobs:
 
 - job: Docker
   pool:
-    vmImage: 'Ubuntu-18.04'
+    vmImage: 'Ubuntu-20.04'
   container: linux-x64
   dependsOn:
   - LinuxWeb