How can i use CodePipeline to build Unity3D application in WebGL format

Question

I have created AWS codepipeline for building unity application and also specified buildspec.yml for the same. But facing issue while executing unity commands. Below command I am using.
 
CMD: xvfb-run --auto-servernum --server-args='-screen 0 640x480x24' /opt/unity/Editor/Unity -quit -batchmode -projectPath . -executeMethod WebGLBuilder.build  '${BUILD_OUTPUT_FOLDER}/${BUILD_OUTPUT_NAME}  -logfile /dev/stdout'

Error: COMMAND_EXECUTION_ERROR: Error while executing command: eval ${UNITY_COMMAND} -projectPath . -executeMethod WebGLBuilder.build '${BUILD_OUTPUT_FOLDER}/${BUILD_OUTPUT_NAME} -logfile /dev/stdout'. Reason: exit status 1

Answer

Your command has single quotes around some parameter `'${BUILD_OUTPUT_FOLDER}/${BUILD_OUTPUT_NAME} -logfile /dev/stdout'`.

I assume that you use -logfile options to print unity log into standard output, and use ${BUILD_OUTPUT_FOLDER}/${BUILD_OUTPUT_NAME} to specify the build target path. Then you should use double quotes instead of single quotes (only double quotes translate the variable) and use it only around the build target  path so that the command to be like following.

`xvfb-run --auto-servernum --server-args='-screen 0 640x480x24' /opt/unity/Editor/Unity -quit -batchmode -projectPath . -executeMethod WebGLBuilder.build "${BUILD_OUTPUT_FOLDER}/${BUILD_OUTPUT_NAME}" -logfile /dev/stdout`

How can i use CodePipeline to build Unity3D application in WebGL format

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