Allow Running Container as Runner Host User (#600)

- Added `runAsHostUser` to allow running the container as the same user as the host system. This fixes most permissions issues on self-hosted runners.
- Perform android sdk setup during entrypoint.sh to ensure it has root permissions if the user switches to a non-root user
- Automatically detect android sdk target version if parameters are not already provided to configure the sdk
- Generate a new uuid for machineID to ensure separate containers are unique to reduce license activation errors
- Add exponential retry strategy for Ubuntu license activations

action.yml

@@ -101,6 +101,12 @@ inputs:
     required: false
     default: ''
     description: '[CloudRunner] GitHub owner name or organization/team name'
+  runAsHostUser:
+    required: false
+    default: 'false'
+    description:
+      'Whether to run as a user that matches the host system or the default root container user. Only applicable to
+      Linux hosts and containers. This is useful for fixing permission errors on Self-Hosted runners.'
   chownFilesTo:
     required: false
     default: ''

dist/platforms/mac/entrypoint.sh

@@ -41,7 +41,7 @@ echo ""
 echo "Please note that the exit code is not very descriptive."
 echo "Most likely it will not help you solve the issue."
 echo ""
-echo "To find the reason for failure: please search for errors in the log above."
+echo "To find the reason for failure: please search for errors in the log above and check for annotations in the summary view."
 echo ""
 fi;
 

dist/platforms/mac/steps/activate.sh

@@ -20,10 +20,6 @@ echo "Requesting activation"
 # Store the exit code from the verify command
 UNITY_EXIT_CODE=$?
 
-if [ ! -f "/Library/Application Support/Unity/Unity_lic.ulf" ]; then
-    echo "::error ::There was an error while trying to activate the Unity license."
-fi
-
 #
 # Display information about the result
 #

dist/platforms/ubuntu/entrypoint.sh

@@ -1,47 +1,76 @@
 #!/usr/bin/env bash
 
+# Ensure machine ID is randomized
+dbus-uuidgen > /etc/machine-id && mkdir -p /var/lib/dbus/ && ln -sf /etc/machine-id /var/lib/dbus/machine-id
+
 #
-# Create directory for license activation
+# Prepare Android SDK, if needed
+# We do this here to ensure it has root permissions
 #
 
-ACTIVATE_LICENSE_PATH="$GITHUB_WORKSPACE/_activate-license~"
-mkdir -p "$ACTIVATE_LICENSE_PATH"
+fullProjectPath="$GITHUB_WORKSPACE/$PROJECT_PATH"
 
-#
-# Run steps
-#
-source /steps/set_extra_git_configs.sh
-source /steps/set_gitcredential.sh
-source /steps/activate.sh
-source /steps/build.sh
-source /steps/return_license.sh
+if [[ "$BUILD_TARGET" == "Android" ]]; then
+  export JAVA_HOME="$(awk -F'=' '/JAVA_HOME=/{print $2}' /usr/bin/unity-editor.d/*)"
+  ANDROID_HOME_DIRECTORY="$(awk -F'=' '/ANDROID_HOME=/{print $2}' /usr/bin/unity-editor.d/*)"
+  SDKMANAGER=$(find $ANDROID_HOME_DIRECTORY/cmdline-tools -name sdkmanager)
+  if [ -z "${SDKMANAGER}" ]
+  then
+    echo "No sdkmanager found"
+    exit 1
+  fi
 
-#
-# Remove license activation directory
-#
+  if [[ -n "$ANDROID_SDK_MANAGER_PARAMETERS" ]]; then
+    echo "Updating Android SDK with parameters: $ANDROID_SDK_MANAGER_PARAMETERS"
+    $SDKMANAGER "$ANDROID_SDK_MANAGER_PARAMETERS"
+  else
+    echo "Updating Android SDK with auto detected target API version"
+    # Read the line containing AndroidTargetSdkVersion from the file
+    targetAPILine=$(grep 'AndroidTargetSdkVersion' "$fullProjectPath/ProjectSettings/ProjectSettings.asset")
 
-rm -r "$ACTIVATE_LICENSE_PATH"
-chmod -R 777 "/BlankProject"
+    # Extract the number after the semicolon
+    targetAPI=$(echo "$targetAPILine" | cut -d':' -f2 | tr -d '[:space:]')
 
-#
-# Instructions for debugging
-#
+    $SDKMANAGER "platforms;android-$targetAPI"
+  fi
 
-if [[ $BUILD_EXIT_CODE -gt 0 ]]; then
-echo ""
-echo "###########################"
-echo "#         Failure         #"
-echo "###########################"
-echo ""
-echo "Please note that the exit code is not very descriptive."
-echo "Most likely it will not help you solve the issue."
-echo ""
-echo "To find the reason for failure: please search for errors in the log above."
-echo ""
-fi;
+  echo "Updated Android SDK."
+else
+  echo "Not updating Android SDK."
+fi
 
-#
-# Exit with code from the build step.
-#
+if [[ "$RUN_AS_HOST_USER" == "true" ]]; then
+  echo "Running as host user"
+
+  # Stop on error if we can't set up the user
+  set -e
+
+  # Get host user/group info so we create files with the correct ownership
+  USERNAME=$(stat -c '%U' "$fullProjectPath")
+  USERID=$(stat -c '%u' "$fullProjectPath")
+  GROUPNAME=$(stat -c '%G' "$fullProjectPath")
+  GROUPID=$(stat -c '%g' "$fullProjectPath")
+
+  groupadd -g $GROUPID $GROUPNAME
+  useradd -u $USERID -g $GROUPID $USERNAME
+  usermod -aG $GROUPNAME $USERNAME
+  mkdir -p "/home/$USERNAME"
+  chown $USERNAME:$GROUPNAME "/home/$USERNAME"
+
+  # Normally need root permissions to access when using su
+  chmod 777 /dev/stdout
+  chmod 777 /dev/stderr
+
+  # Don't stop on error when running our scripts as error handling is baked in
+  set +e
+
+  # Switch to the host user so we can create files with the correct ownership
+  su $USERNAME -c "$SHELL -c 'source /steps/runsteps.sh'"
+else
+  echo "Running as root"
+
+  # Run as root
+  source /steps/runsteps.sh
+fi
 
-exit $BUILD_EXIT_CODE
+exit $?

dist/platforms/ubuntu/steps/activate.sh

@@ -1,31 +1,54 @@
 #!/usr/bin/env bash
 
-# Run in ACTIVATE_LICENSE_PATH directory
-echo "Changing to \"$ACTIVATE_LICENSE_PATH\" directory."
-pushd "$ACTIVATE_LICENSE_PATH"
-
 if [[ -n "$UNITY_SERIAL" && -n "$UNITY_EMAIL" && -n "$UNITY_PASSWORD" ]]; then
   #
   # SERIAL LICENSE MODE
   #
-  # This will activate unity, using the activating process.
+  # This will activate unity, using the serial activation process.
   #
   echo "Requesting activation"
 
-  # Activate license
-  unity-editor \
-    -logFile /dev/stdout \
-    -quit \
-    -serial "$UNITY_SERIAL" \
-    -username "$UNITY_EMAIL" \
-    -password "$UNITY_PASSWORD" \
-    -projectPath "/BlankProject"
+  # Loop the unity-editor call until the license is activated with exponential backoff and a maximum of 5 retries
+  retry_count=0
 
-  # Store the exit code from the verify command
-  UNITY_EXIT_CODE=$?
+  # Initialize delay to 15 seconds
+  delay=15
+
+  # Loop until UNITY_EXIT_CODE is 0 or retry count reaches 5
+  while [[ $retry_count -lt 5 ]]
+  do
+    # Activate license
+    unity-editor \
+      -logFile /dev/stdout \
+      -quit \
+      -serial "$UNITY_SERIAL" \
+      -username "$UNITY_EMAIL" \
+      -password "$UNITY_PASSWORD" \
+      -projectPath "/BlankProject"
+
+    # Store the exit code from the verify command
+    UNITY_EXIT_CODE=$?
+
+    # Check if UNITY_EXIT_CODE is 0
+    if [[ $UNITY_EXIT_CODE -eq 0 ]]
+    then
+      echo "Activation successful"
+      break
+    else
+      echo "Activation failed, retrying in $delay seconds..."
+      sleep $delay
+
+      # Increment retry count
+      ((retry_count++))
+
+      # Double the delay for the next iteration
+      delay=$((delay * 2))
+    fi
+  done
 
-  if [ ! -f "~/.local/share/unity3d/Unity/Unity_lic.ulf" ]; then
-    echo "::error ::There was an error while trying to activate the Unity license."
+  if [[ $retry_count -eq 5 ]]
+  then
+    echo "Activation failed after 5 retries"
   fi
 
 elif [[ -n "$UNITY_LICENSING_SERVER" ]]; then
@@ -54,8 +77,9 @@ else
   echo "Visit https://game.ci/docs/github/getting-started for more"
   echo "details on how to set up one of the possible activation strategies."
 
-  echo "::error ::No valid license activation strategy could be determined."
-  # Immediately exit as no UNITY_EXIT_CODE can be derrived.
+  echo "::error ::No valid license activation strategy could be determined. Make sure to provide UNITY_EMAIL, UNITY_PASSWORD, and either a UNITY_SERIAL \
+or UNITY_LICENSE. Otherwise please use UNITY_LICENSING_SERVER."
+  # Immediately exit as no UNITY_EXIT_CODE can be derived.
   exit 1;
 
 fi
@@ -70,6 +94,7 @@ else
   # Activation failed so exit with the code from the license verification step
   echo "Unclassified error occured while trying to activate license."
   echo "Exit code was: $UNITY_EXIT_CODE"
+  echo "::error ::There was an error while trying to activate the Unity license."
   exit $UNITY_EXIT_CODE
 fi
 

dist/platforms/ubuntu/steps/build.sh

@@ -62,27 +62,6 @@ else
   #
 fi
 
-#
-# Prepare Android SDK, if needed
-#
-
-if [[ "$BUILD_TARGET" == "Android" && -n "$ANDROID_SDK_MANAGER_PARAMETERS" ]]; then
-  echo "Updating Android SDK with parameters: $ANDROID_SDK_MANAGER_PARAMETERS"
-  export JAVA_HOME="$(awk -F'=' '/JAVA_HOME=/{print $2}' /usr/bin/unity-editor.d/*)"
-  ANDROID_HOME_DIRECTORY="$(awk -F'=' '/ANDROID_HOME=/{print $2}' /usr/bin/unity-editor.d/*)"
-  SDKMANAGER=$(find $ANDROID_HOME_DIRECTORY/cmdline-tools -name sdkmanager)
-  if [ -z "${SDKMANAGER}" ]
-  then
-    echo "No sdkmanager found"
-    exit 1
-  fi
-
-  $SDKMANAGER "$ANDROID_SDK_MANAGER_PARAMETERS"
-  echo "Updated Android SDK."
-else
-  echo "Not updating Android SDK."
-fi
-
 #
 # Pre-build debug information
 #

dist/platforms/ubuntu/steps/runsteps.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+
+#
+# Run steps
+#
+source /steps/set_extra_git_configs.sh
+source /steps/set_gitcredential.sh
+source /steps/activate.sh
+
+# If we didn't activate successfully, exit with the exit code from the activation step.
+if [[ $UNITY_EXIT_CODE -ne 0 ]]; then
+  exit $UNITY_EXIT_CODE
+fi
+
+source /steps/build.sh
+source /steps/return_license.sh
+
+#
+# Instructions for debugging
+#
+
+if [[ $BUILD_EXIT_CODE -gt 0 ]]; then
+echo ""
+echo "###########################"
+echo "#         Failure         #"
+echo "###########################"
+echo ""
+echo "Please note that the exit code is not very descriptive."
+echo "Most likely it will not help you solve the issue."
+echo ""
+echo "To find the reason for failure: please search for errors in the log above and check for annotations in the summary view."
+echo ""
+fi;
+
+#
+# Exit with code from the build step.
+#
+
+# Exiting su
+exit $BUILD_EXIT_CODE

dist/platforms/windows/activate.ps1

@@ -13,7 +13,4 @@ Write-Output ""
                                      -projectPath "c:/BlankProject" `
                                      -logfile - | Out-Host
 
-if(-not(Test-path "C:/ProgramData/Unity/Unity_lic.ulf" -PathType leaf))
-{
-  Write-Output "::error ::There was an error while trying to activate the Unity license."
-}
+$ACTIVATION_EXIT_CODE = $LASTEXITCODE

dist/platforms/windows/entrypoint.ps1

@@ -1,5 +1,4 @@
 Get-Process
-Start-Sleep -Seconds 3
 
 # Import any necessary registry keys, ie: location of windows 10 sdk
 # No guarantee that there will be any necessary registry keys, ie: tvOS
@@ -17,13 +16,17 @@ Get-Process -Name regsvr32 | ForEach-Object { Stop-Process -Id $_.Id -Force }
 # Activate Unity
 . "c:\steps\activate.ps1"
 
+# If we didn't activate successfully, exit with the exit code from the activation step.
+if ($ACTIVATION_EXIT_CODE -ne 0) {
+    exit $ACTIVATION_EXIT_CODE
+}
+
 # Build the project
 . "c:\steps\build.ps1"
 
 # Free the seat for the activated license
 . "c:\steps\return_license.ps1"
 
-Start-Sleep -Seconds 3
 Get-Process
 
 exit $BUILD_EXIT_CODE

src/model/build-parameters.ts

@@ -59,6 +59,7 @@ class BuildParameters {
   public kubeVolumeSize!: string;
   public kubeVolume!: string;
   public kubeStorageClass!: string;
+  public runAsHostUser!: String;
   public chownFilesTo!: string;
   public commandHooks!: string;
   public pullInputList!: string[];
@@ -168,6 +169,7 @@ class BuildParameters {
       sshAgent: Input.sshAgent,
       sshPublicKeysDirectoryPath: Input.sshPublicKeysDirectoryPath,
       gitPrivateToken: Input.gitPrivateToken || (await GithubCliReader.GetGitHubAuthToken()),
+      runAsHostUser: Input.runAsHostUser,
       chownFilesTo: Input.chownFilesTo,
       dockerCpuLimit: Input.dockerCpuLimit,
       dockerMemoryLimit: Input.dockerMemoryLimit,