[Docker] Fix the docker auth step #15495

Job	Run time
raspi-2 / initialize	42s
raspi-2-skia / initialize	45s
raspi-2 / docker-build-image	28m 5s
raspi-2 / docker-unittest-image	0s
raspi-2-skia / docker-build-image	25m 33s
raspi-2-skia / docker-unittest-image	0s
raspi-2-skia / raspi-2-skia_devel	10m 11s
raspi-2-skia / raspi-2-skia_debug	13m 50s
raspi-2-skia / raspi-2-skia_qa	8m 43s
raspi-2-skia / raspi-2-skia_gold	8m 33s
raspi-2 / raspi_devel	10m 18s
raspi-2 / raspi_debug	14m 31s
raspi-2 / raspi_qa	8m 52s
raspi-2 / raspi_gold	9m 50s
raspi-2 / sbversion-17_devel	9m 59s
raspi-2 / sbversion-17_debug	14m 0s
raspi-2 / sbversion-17_qa	8m 50s
raspi-2 / sbversion-17_gold	8m 34s
raspi-2-skia / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
raspi-2-skia / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
raspi-2 / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
raspi-2 / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
	3h 1m 16s

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