[wf] push images of latest and 2nd latest version #1835

Job	Run time
container_build (apache2, wsgi)	1m 1s
container_build (apache2, django)	1m 5s
container_build (nginx, wsgi)	1m 3s
container_build (nginx, django)	1m 2s
lego_tests (rsa2048, apache2, wsgi)	53s
lego_tests (rsa2048, apache2, django)	46s
lego_tests (rsa2048, nginx, wsgi)	46s
lego_tests (rsa2048, nginx, django)	57s
lego_tests (rsa4096, apache2, wsgi)	48s
lego_tests (rsa4096, apache2, django)	56s
lego_tests (rsa4096, nginx, wsgi)	1m 0s
lego_tests (rsa4096, nginx, django)	52s
lego_tests (ec256, apache2, wsgi)	44s
lego_tests (ec256, apache2, django)	43s
lego_tests (ec256, nginx, wsgi)	45s
lego_tests (ec256, nginx, django)	50s
cleanup (apache2, wsgi)	2s
cleanup (apache2, django)	3s
cleanup (nginx, wsgi)	4s
cleanup (nginx, django)	3s
	14m 23s

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