434: define a virtual package for Alpine

src/SelfManage/BuildTools/PackageManager.php

@@ -52,7 +52,7 @@ enum PackageManager: string
         return match ($this) {
             self::Test => ['echo', '"fake installing ' . implode(', ', $packages) . '"'],
             self::Apt => ['apt-get', 'install', '-y', '--no-install-recommends', '--no-install-suggests', ...$packages],
-            self::Apk => ['apk', 'add', '--no-cache', ...$packages],
+            self::Apk => ['apk', 'add', '--no-cache', '--virtual', '.php-pie-deps', ...$packages],
             self::Dnf => ['dnf', 'install', '-y', ...$packages],
             self::Yum => ['yum', 'install', '-y', ...$packages],
             self::Brew => ['brew', 'install', ...$packages],

test/end-to-end/Dockerfile

@@ -7,6 +7,7 @@ FROM alpine AS test_pie_installs_build_tools_on_alpine
 RUN apk add php php-phar php-mbstring php-iconv php-openssl bzip2-dev libbz2
 COPY --from=build_pie_phar /app/pie.phar /usr/local/bin/pie
 RUN pie install --auto-install-build-tools -v php/bz2
+RUN apk del .php-pie-deps
 RUN pie show
 
 FROM fedora AS test_pie_installs_build_tools_on_fedora

test/unit/SelfManage/BuildTools/PackageManagerTest.php

@@ -22,8 +22,20 @@ final class PackageManagerTest extends TestCase
             PackageManager::Apt->installCommand(['a', 'b']),
         );
         self::assertSame(
-            ['apk', 'add', '--no-cache', 'a', 'b'],
+            ['apk', 'add', '--no-cache', '--virtual', '.php-pie-deps', 'a', 'b'],
             PackageManager::Apk->installCommand(['a', 'b']),
         );
+        self::assertSame(
+            ['dnf', 'install', '-y', 'a', 'b'],
+            PackageManager::Dnf->installCommand(['a', 'b']),
+        );
+        self::assertSame(
+            ['yum', 'install', '-y', 'a', 'b'],
+            PackageManager::Yum->installCommand(['a', 'b']),
+        );
+        self::assertSame(
+            ['brew', 'install', 'a', 'b'],
+            PackageManager::Brew->installCommand(['a', 'b']),
+        );
     }
 }