add ENTRYPOINT variable to proton entrypoint to invoke custom script, alternative to APP_PATH
add ENTRYPOINT variable to proton entrypoint to invoke custom script, alternative to APP_PATH

GoogleCloudPlatform/selkies-vdi,GoogleCloudPlatform/selkies-vdi,GoogleCloudPlatform/selkies-vdi,GoogleCloudPlatform/selkies-vdi,GoogleCloudPlatform/selkies-vdi