Add suite aliases

Note: thanks to Alpine 3.13 not being supported anymore, this fails to run, so I'm running it locally against an older commit so it can appropriately scrape the parent arches for one last push with tags before we update the Alpine and Debian versions.

Author: tianon

generate-stackbrew-library.sh

@@ -68,43 +68,64 @@ join() {
 }
 
 for version in "${versions[@]}"; do
-	commit="$(dirCommit "$version")"
-
-	fullVersion="$(git show "$commit":"$version/Dockerfile" | awk '$1 == "ENV" && $2 == "REDMINE_VERSION" { print $3; exit }')"
-
-	versionAliases=(
-		$fullVersion
-		$version
-		${aliases[$version]:-}
-	)
-
-	parent="$(awk 'toupper($1) == "FROM" { print $2 }' "$version/Dockerfile")"
-	arches="${parentRepoToArches[$parent]}"
-
-	# the "gosu" Debian package isn't available on mips64le
-	arches="$(sed <<<" $arches " -e 's/ mips64le / /g')"
-
-	echo
-	cat <<-EOE
-		Tags: $(join ', ' "${versionAliases[@]}")
-		Architectures: $(join ', ' $arches)
-		GitCommit: $commit
-		Directory: $version
-	EOE
-
-	for variant in passenger alpine; do
-		[ -f "$version/$variant/Dockerfile" ] || continue
-
-		commit="$(dirCommit "$version/$variant")"
-
-		variantAliases=( "${versionAliases[@]/%/-$variant}" )
-		variantAliases=( "${variantAliases[@]//latest-/}" )
+	for variant in '' passenger alpine; do
+		dir="$version${variant:+/$variant}"
+		[ -f "$dir/Dockerfile" ] || continue
+
+		commit="$(dirCommit "$dir")"
+
+		fullVersion="$(git show "$commit":"$dir/Dockerfile" | awk '$1 == "ENV" && $2 == "REDMINE_VERSION" { print $3; exit }')"
+
+		versionAliases=(
+			$fullVersion
+			$version
+			${aliases[$version]:-}
+		)
+
+		if [ -n "$variant" ]; then
+			variantAliases=( "${versionAliases[@]/%/-$variant}" )
+			variantAliases=( "${variantAliases[@]//latest-/}" )
+		else
+			variantAliases=( "${versionAliases[@]}" )
+		fi
+
+		variantParent="$(awk 'toupper($1) == "FROM" { print $2 }' "$dir/Dockerfile")"
+
+		suite="${variantParent#*:}" # "ruby:2.7-slim-bullseye", "2.7-alpine3.15"
+		suite="${suite##*-}" # "bullseye", "alpine3.15"
+		suite="${suite#alpine}" # "bullseye", "3.15"
+
+		case "$variant" in
+			alpine)
+				suite="alpine$suite" # "alpine3.8"
+				suiteAliases=( "${versionAliases[@]/%/-$suite}" )
+				;;
+			passenger)
+				suiteAliases=( "${variantAliases[@]}" )
+				;;
+			*)
+				suiteAliases=( "${variantAliases[@]/%/-$suite}" )
+				;;
+		esac
+		suiteAliases=( "${suiteAliases[@]//latest-/}" )
+		variantAliases+=( "${suiteAliases[@]}" )
+
+		case "$variant" in
+			passenger) variantArches='amd64' ;; # https://github.com/docker-library/redmine/pull/87#issuecomment-323877678
+			*) variantArches="${parentRepoToArches[$variantParent]}" ;;
+		esac
+
+		if [ "$variant" != 'alpine' ]; then
+			# the "gosu" Debian package isn't available on mips64le
+			variantArches="$(sed <<<" $variantArches " -e 's/ mips64le / /g')"
+		fi
 
 		echo
 		cat <<-EOE
 			Tags: $(join ', ' "${variantAliases[@]}")
+			Architectures: $(join ', ' $variantArches)
 			GitCommit: $commit
-			Directory: $version/$variant
+			Directory: $dir
 		EOE
 	done
 done