Alpine 3.9 was removed, action fails everytime

[danbopes]

#2 [internal] load metadata for docker.io/library/alpine:3.9
  #2 ERROR: unexpected status from HEAD request to https://registry-1.docker.io/v2/library/alpine/manifests/3.9: 401 Unauthorized
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   > [internal] load metadata for docker.io/library/alpine:3.9:
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  Dockerfile:1
  --------------------
     1 | >>> FROM alpine:3.9
     2 |     
     3 |     LABEL "com.github.actions.name"="Push new files back to supplied branch name."
  --------------------
  ERROR: failed to build: failed to solve: alpine:3.9: failed to resolve source metadata for docker.io/library/alpine:3.9: unexpected status from HEAD request to https://registry-1.docker.io/v2/library/alpine/manifests/3.9: 401 Unauthorized