Improve base image tracking #773

Job	Run time
No changes	22s
Change terraform 12	24s
No changes without comment	35s
Change terraform 11	32s
Change without github comment	21s
Add comment without token	24s
Change terraform 15	27s
Plan variables some which are sensitive	25s
Plan single variable	30s
Plan single sensitive variable	25s
Error without comment	23s
Change terraform 15.4	24s
Error	35s
Change latest terraform	28s
Change terraform 13	22s
Plan using deprecated var and sensitive variable	26s
Plan JSON tfvars	24s
Change with shell init commands	20s
Change terraform 14	39s
Default path	26s
Test on arm64	45s
Test plan text on Terraform 1.4	28s
always-new	38s
Full colour plan for diff highlighting	49s
Error with invalid paths	24s
	11m 56s

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