CI: dependencies #3145

CodeBuild image 6.0 lacks dependencies needed to run vscode:

    /codebuild/output/src394883014/src/.vscode-test/vscode-linux-x64-1.74.3/bin/../code:
    error while loading shared libraries: libatk-1.0.so.0: cannot open shared object file: No such file or directory
    ...
    /codebuild/output/src245202923/src/.vscode-test/vscode-linux-x64-1.75.0/bin/../code:
    error while loading shared libraries: libasound.so.2: cannot open shared object file: No such file or directory

Author: justinmk3

buildspec/linuxIntegrationTests.yml

@@ -22,13 +22,13 @@ phases:
             - '>/dev/null apt-get -qq install -y ca-certificates'
             - 'apt-get install --reinstall ca-certificates'
             - 'add-apt-repository -y ppa:deadsnakes/ppa'
-            # Install other needed dependencies
+            # Other dependencies.
             - 'apt-get -qq install -y jq python3.7 python3.8 python3-pip'
             # Fail early if any of these not found.
             - 'python3.7 --version'
             - 'python3.8 --version'
-            - 'python3.9 --version'
-            - '>/dev/null apt-get -qq install -y libgtk-3-dev libxss1 xvfb libnss3-dev libasound2 libasound2-plugins libsecret-1-0'
+            # Dependencies for running vscode.
+            - '>/dev/null apt-get -yqq install libatk1.0-0 libgtk-3-dev libxss1 xvfb libnss3-dev libasound2 libasound2-plugins libsecret-1-0'
             - '>/dev/null pip3 install --upgrade aws-sam-cli'
             # Print info about sam (version, location, …).
             - 'pip3 show aws-sam-cli'

buildspec/linuxTests.yml

@@ -10,6 +10,12 @@ phases:
         runtime-versions:
             nodejs: 16
 
+        commands:
+            # Without this, "Unable to locate package libatk1.0-0".
+            - '>/dev/null apt-get -yqq update'
+            # Dependencies for running vscode.
+            - '>/dev/null apt-get -yqq install libatk1.0-0 libgtk-3-dev libxss1 xvfb libnss3-dev libasound2 libasound2-plugins libsecret-1-0'
+
     pre_build:
         commands:
             # If present, log into CodeArtifact. Provides a nice safety net in case NPM is down.