docker,script/spec: update comments and tests

As announced with the v3.6.0 release of the Git LFS client, and as
noted in commit 23fbfe8 of PR git-lfs#5911,
since all the distribution versions based on Red Hat Enterprise Linux
(RHEL) 7, CentOS 7, and SUSE Linux Enterprise Server (SLES) 12 for which
we previously built RPM packages have now reached the end of their
standard LTS (Long-Term Support) periods, future releases of Git LFS
will no longer provide support for these platforms or build packages
for them.

Because we anticipate making a v3.7.0 release of the Git LFS client in
the near future, we removed the Dockerfile we used to build packages
for the RHEL/CentOS 7 and SLES 12 platforms in commit
git-lfs/build-dockers@cfde130 of
PR git-lfs/build-dockers#71.  We then also removed the entries for
these platforms from the list of our supported Linux distribution
versions in the DistroMap Ruby class source file, which is utilized
by several scripts run by our GitHub Actions release workflow jobs
when building and naming the Linux packages we publish on Packagecloud.

Previously, we removed support for the RHEL/CentOS 6 platform in
commit d69e28d in PR git-lfs#4328.

However, our "docker/run_dockers.bsh" shell script still references
these platforms in its comments, so we update that script now to
provide more up-to-date usage examples.

As well, we update the test data in the Ruby RSpec script we use to
validate the DistroMap Ruby class source file, so that the test data
now aligns more closely with our current list of supported Linux
distribution versions.  Note, though, that this change does not affect
the behaviour of either the test script or the DistroMap source file.

Author: chrisd8088

docker/run_dockers.bsh

@@ -1,12 +1,12 @@
 #!/usr/bin/env bash
 
 # Usage:
-#  ./run_dockers.bsh                   # Run all the Docker images
-#  ./run_dockers.bsh centos_6 centos_7 # Run only the CentOS 6 & 7 Docker images
-#  ./run_dockers.bsh centos_6 -- bash  # Run Bash in the CentOS 6 Docker image
-#  ./run_dockers.bsh --prune           # Remove each Docker image after running
-#  ./run_dockers.bsh --arch=<arch>     # Build for a specific architecture,
-#                                      # e.g., arm64
+#  ./run_dockers.bsh                     # Run all the Docker images
+#  ./run_dockers.bsh debian_11 debian_12 # Run only the Debian 11 & 12 images
+#  ./run_dockers.bsh debian_11 -- bash   # Run Bash in the Debian 11 image
+#  ./run_dockers.bsh --prune             # Remove each image after running
+#  ./run_dockers.bsh --arch=<arch>       # Build for a specific architecture,
+#                                        # e.g., arm64
 
 # Special Environment Variables
 #  AUTO_REMOVE - Default 1. If set to 0, the Docker container will not be

script/spec/distro_spec.rb

@@ -2,20 +2,6 @@
 
 def test_map
   {
-    "centos/7" => {
-      name: "RPM RHEL 7/CentOS 7",
-      component: "el/7",
-      image: "centos_7",
-      package_type: "rpm",
-      package_tag: "-1.el7",
-      equivalent: [
-        "el/7",
-        "scientific/7",
-        "opensuse/15.4",
-        "sles/12.5",
-        "sles/15.4",
-      ],
-    },
     "centos/8" => {
       name: "RPM RHEL 8/Rocky Linux 8",
       component: "el/8",
@@ -26,6 +12,20 @@ def test_map
         "el/8",
       ],
     },
+    "rocky/9" => {
+      name: "RPM RHEL 9/Rocky Linux 9",
+      component: "el/9",
+      image: "rocky_9",
+      package_type: "rpm",
+      package_tag: "-1.el9",
+      equivalent: [
+        "el/9",
+        "fedora/41",
+        "fedora/42",
+        "opensuse/15.6",
+        "sles/15.6",
+      ],
+    },
     "debian/12" => {
       name: "Debian 12",
       component: "debian/bookworm",
@@ -46,7 +46,7 @@ def test_map
     stderr = StringIO.new
     expect(DistroMapProgram.new(stdout, stderr, test_map).run(["--image-names"])).to eq 0
     expect(stderr.string).to be_empty
-    expect(stdout.string).to eq "centos_7 centos_8 debian_12\n"
+    expect(stdout.string).to eq "centos_8 rocky_9 debian_12\n"
   end
 
   it "should print distro markdown" do
@@ -55,8 +55,8 @@ def test_map
     expect(DistroMapProgram.new(stdout, stderr, test_map).run(["--distro-markdown"])).to eq 0
     expect(stderr.string).to be_empty
     expected = <<~EOM
-    [RPM RHEL 7/CentOS 7](https://packagecloud.io/github/git-lfs/packages/el/7/git-lfs-VERSION-1.el7.x86_64.rpm/download)
     [RPM RHEL 8/Rocky Linux 8](https://packagecloud.io/github/git-lfs/packages/el/8/git-lfs-VERSION-1.el8.x86_64.rpm/download)
+    [RPM RHEL 9/Rocky Linux 9](https://packagecloud.io/github/git-lfs/packages/el/9/git-lfs-VERSION-1.el9.x86_64.rpm/download)
     [Debian 12](https://packagecloud.io/github/git-lfs/packages/debian/bookworm/git-lfs_VERSION_amd64.deb/download)
     EOM
     expect(stdout.string).to eq expected
@@ -74,16 +74,16 @@ def test_map
 context DistroMap do
   it "should produce the correct distro names" do
     map = {
-      "centos/7" => [
-        "el/7",
-        "scientific/7",
-        "opensuse/15.4",
-        "sles/12.5",
-        "sles/15.4",
-      ],
       "centos/8" => [
         "el/8",
       ],
+      "rocky/9" => [
+        "el/9",
+        "fedora/41",
+        "fedora/42",
+        "opensuse/15.6",
+        "sles/15.6",
+      ],
       "debian/12" => [
         "debian/bookworm",
         "debian/trixie",
@@ -93,6 +93,6 @@ def test_map
   end
 
   it "should produce the correct image names" do
-    expect(DistroMap.new(test_map).image_names).to eq %w[centos_7 centos_8 debian_12]
+    expect(DistroMap.new(test_map).image_names).to eq %w[centos_8 rocky_9 debian_12]
   end
 end