Update README

Author: charsbar

README.md

@@ -10,41 +10,45 @@ Dockerfile to test MT.
 |image name|base image|Perl|PHP|MySQL|OpenSSL|End of Life|
 |-|-|-|-|-|-|-|
 |centos7|centos:7|5.16.3|*7.1.33*|*MariaDB 5.5.68*|1.0.2k|2024-06|
-|buster|debian:buster-slim|*5.28.1*|*7.3.31*|*MariaDB 10.3.39*|1.1.1n|2022-01|
 |bullseye|debian:bullseye-slim|*5.32.1*|*7.4.33*|*MariaDB 10.5.28*|1.1.1w|2024-08|
 |fedora35|fedora:35|*5.34.1*|*8.0.26*|8.0.31|1.1.1q|2022-12|
 |fedora37|fedora:37|*5.36.1*|*8.1.25*|*8.0.35*|3.0.9|2023-12|
-|fedora40|fedora:40|5.38.4|*8.2.29*|*MariaDB 10.11.11*|3.2.4|-|
+|fedora40|fedora:40|*5.38.4*|*8.2.29*|*MariaDB 10.11.11*|3.2.4|-|
 |fedora42|fedora:42|*5.40.3*|*8.4.16*|*9.5.0*|3.2.6|-|
 |fedora43|fedora:43|*5.42.0*|8.4.16|*8.4.7*|3.5.4|-|
-|cloud6 (\*1)|centos:7|*5.28.2*|*7.4.33*|*5.7.44*|1.0.2k|-|
 |cloud7 (\*1)|rockylinux/rockylinux:9|*5.38.2*|*8.3.29*|MariaDB 10.5.27|3.5.1|-|
 
-\*1 These images are not used in the MT cloud, but the well-known modules should have the same version (except for those used only in tests).
+\*1 This image is not used in the MT cloud, but the well-known modules should have the same versions (except for those used only in tests).
+
+## Environment list (multi platforms, suitable for mt-dev)
+
+|image name|base image|Perl|PHP|MySQL|OpenSSL|End of Life|
+|-|-|-|-|-|-|-|
+|noble|ubuntu:noble|5.38.2|8.3.6|8.4.7|3.0.13|-|
+|plucky|ubuntu:plucky|5.40.1|8.4.5|8.4.7|3.4.1|-|
+|questing|ubuntu:questing|5.42.0|8.4.11|8.4.7|3.5.3|-|
 
 ## Environment list (only for manual testing)
 
 |image name|base image|Perl|PHP|MySQL|OpenSSL|End of Life|
 |-|-|-|-|-|-|-|
+|buster (\*2)|debian:buster-slim|*5.28.1*|*7.3.31*|*MariaDB 10.3.39*|1.1.1n|2022-01|
 |centos6 (\*2)|centos:6|*5.10.1*|*5.3.3*|*5.1.73*|1.0.1e|2020-11|
 |centos8|centos:8|5.26.3|8.0.30|8.0.26|1.1.1k|2021-12|
-|fedora32 (\*2)|fedora:32|5.30.3|7.4.19|8.0.24|1.1.1k|2021-05|
 |fedora39 (\*2)|fedora:39|5.38.2|8.2.25|8.0.39|3.1.4|2024-11|
 |fedora41 (\*2)|fedora:41|5.40.3|8.3.27|8.4.7|3.2.6|-|
 |rawhide|fedora:rawhide|5.42.0|8.5.1|8.4.7|3.5.4|-|
 |rockylinux|rockylinux/rockylinux:9|5.32.1|8.1.34|8.0.44|3.5.1|-|
 |bookworm|debian:bookworm-slim|5.36.0|8.2.29|MariaDB 10.11.14|3.0.17|2028-06|
 |sid|debian:sid|5.40.1|8.4.16|MariaDB 11.8.5|3.5.4|-|
-|noble|ubuntu:noble|5.38.2|8.3.6|8.4.7|3.0.13|-|
 |amazonlinux|amazonlinux:2|5.16.3|7.4.33|MariaDB 5.5.68|1.0.2k|-|
-|amazonlinux2023 (\*4)|amazonlinux:2023|5.32.1|8.4.14|MariaDB 10.11.13|3.2.2|-|
+|amazonlinux2023|amazonlinux:2023|5.32.1|8.4.14|MariaDB 10.11.13|3.2.2|-|
 |postgresql|fedora:41|5.40.3|8.3.27|Postgres 16.11|3.2.6|-|
 |oracle (\*3)|oraclelinux:9-slim|5.32.1|8.3.29|MariaDB 10.5.29|3.5.1|-|
 |oracle8 (\*3)|oraclelinux:8-slim|5.26.3|8.2.30|MariaDB 10.3.39|1.1.1k|-|
 
 \*2 These images were used to test older versions of MT.
 \*3 with DBD::Oracle 1.80 + OracleInstantClient 26
-\*4 This image currently lacks php-dom, thus phpunit
 
 ## Special images
 
@@ -60,8 +64,32 @@ Dockerfile to test MT.
 $ perl bin/update_dockerfile.pl
 $ perl bin/build_all.pl (with or without --no-cache)
 $ perl bin/check_all.pl
+$ perl bin/test_workflows.pl
 $ perl bin/test_readme.pl
-$ perl bin/push_all.pl
+$ perl bin/build_all.pl --push
 
 then, make a pull request, review, and merge it to mirror the uploaded images.
 ```
+
+## Multi-platform build
+
+See https://docs.docker.com/build/building/multi-platform/ for details.
+If you do not use Docker Build Cloud, then prepare a remote environment with
+a different architecture from your local environment. You'll need to add your
+remote USER to the docker group and make sure remote dockerd is running.
+Create your builder. The following uses local amd64 and remote arm64, but
+you may do differently.
+
+```
+$ docker buildx create --name my_builder --node amd64 --platform linux/amd64
+$ docker buildx create --name my_builder --append --node arm64 --platform linux/arm64 ssh://USER@HOST
+```
+
+Then specify your builder to build. Only a few images support multi-platform build right now.
+
+```
+$ perl bin/build_all.pl --builder my_builder
+$ perl bin/build_all.pl --builder my_builder --push
+
+push_all.pl doesn't work well for multi-platform images.
+```