let docker decide the arch of images. remove amd64/arm64 symlinks

Author: romeroalx

BUILDING-PACKAGES.md

@@ -51,12 +51,6 @@ cp builder-support/dockerfiles/Dockerfile.target.debian-buster builder-support/d
 
 In the new `builder-support/dockerfiles/Dockerfile.target.debian-bookworm` file, replace every occurence of `debian-buster` by `debian-bookworm`, and of `debian:buster` by `debian:bookworm`
 
-Create symbolic links for the amd64 and arm64 versions:
-```
-ln -s builder-support/dockerfiles/Dockerfile.target.debian-bookworm builder-support/dockerfiles/Dockerfile.target.debian-bookworm-amd64
-ln -s builder-support/dockerfiles/Dockerfile.target.debian-bookworm builder-support/dockerfiles/Dockerfile.target.debian-bookworm-arm64
-```
-
 Then add the new target to the list of OSes in the `.github/workflows/builder-dispatch.yml` workflow file:
 ```
 default: >-

builder-support/dockerfiles/Dockerfile.target.centos-7

@@ -3,12 +3,7 @@
 
 # This defines the distribution base layer
 # Put only the bare minimum of common commands here, without dev tools
-@IF [ ${BUILDER_TARGET} = centos-7 -o ${BUILDER_TARGET} = el-7 ]
 FROM centos:7 as dist-base
-@ENDIF
-@IF [ ${BUILDER_TARGET} = centos-7-amd64 -o ${BUILDER_TARGET} = el-7-amd64]
-FROM amd64/centos:7 as dist-base
-@ENDIF
 
 ARG BUILDER_CACHE_BUSTER=
 RUN touch /var/lib/rpm/* && yum install -y epel-release centos-release-scl-rh

builder-support/dockerfiles/Dockerfile.target.centos-7-amd64

@@ -9,12 +9,6 @@ FROM centos:8 as dist-base
 @IF [ ${BUILDER_TARGET} = centos-8-stream ]
 FROM quay.io/centos/centos:stream8 as dist-base
 @ENDIF
-@IF [ ${BUILDER_TARGET} = centos-8-amd64 ]
-FROM amd64/centos:8 as dist-base
-@ENDIF
-@IF [ ${BUILDER_TARGET} = centos-8-arm64 ]
-FROM arm64v8/centos:8 as dist-base
-@ENDIF
 
 ARG BUILDER_CACHE_BUSTER=
 

builder-support/dockerfiles/Dockerfile.target.centos-8

@@ -1,15 +1,7 @@
 # First do the source builds
 @INCLUDE Dockerfile.target.sdist
 
-@IF [ ${BUILDER_TARGET} = debian-bookworm ]
 FROM debian:bookworm as dist-base
-@ENDIF
-@IF [ ${BUILDER_TARGET} = debian-bookworm-amd64 ]
-FROM amd64/debian:bookworm as dist-base
-@ENDIF
-@IF [ ${BUILDER_TARGET} = debian-bookworm-arm64 ]
-FROM arm64v8/debian:bookworm as dist-base
-@ENDIF
 
 ARG BUILDER_CACHE_BUSTER=
 ARG APT_URL

builder-support/dockerfiles/Dockerfile.target.centos-8-amd64

@@ -1,15 +1,7 @@
 # First do the source builds
 @INCLUDE Dockerfile.target.sdist
 
-@IF [ ${BUILDER_TARGET} = debian-bullseye ]
 FROM debian:bullseye as dist-base
-@ENDIF
-@IF [ ${BUILDER_TARGET} = debian-bullseye-amd64 ]
-FROM amd64/debian:bullseye as dist-base
-@ENDIF
-@IF [ ${BUILDER_TARGET} = debian-bullseye-arm64 ]
-FROM arm64v8/debian:bullseye as dist-base
-@ENDIF
 
 ARG BUILDER_CACHE_BUSTER=
 ARG APT_URL