[skip ci] fix firefox installation by allowing downgrades after having removed snap ff

src/main/kotlin/org/domaindrivenarchitecture/provs/desktop/infrastructure/Firefox.kt

@@ -38,5 +38,5 @@ fun Prov.installFirefox() = task {
     )
 
     aptInstall("firefox")
-    cmd("apt-get upgrade -y firefox", sudo = true)
+    cmd("apt-get upgrade -y --allow-downgrades firefox", sudo = true)
 }

src/test/kotlin/org/domaindrivenarchitecture/provs/desktop/infrastructure/FirefoxKtTest.kt

@@ -1,12 +1,18 @@
 package org.domaindrivenarchitecture.provs.desktop.infrastructure
 
+import org.domaindrivenarchitecture.provs.framework.core.remote
 import org.domaindrivenarchitecture.provs.framework.ubuntu.install.base.checkPackageInstalled
+import org.domaindrivenarchitecture.provs.framework.ubuntu.secret.secretSources.PromptSecretSource
 import org.domaindrivenarchitecture.provs.test.defaultTestContainer
 import org.domaindrivenarchitecture.provs.test.tags.ExtensiveContainerTest
 import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.Disabled
+import org.junit.jupiter.api.Test
 
 internal class FirefoxKtTest {
 
+    // Attention: this test does not test full functionality of installFirefox, e.g. does not test
+    // remove snap, as this test runs against a container which does not have snap-firefox installed
     @ExtensiveContainerTest
     fun installFirefox() {
         // when
@@ -18,4 +24,29 @@ internal class FirefoxKtTest {
         // then
         assertTrue(result.success)
     }
+
+    @Test
+    @Disabled("Update connection details,then enable and run manually")
+    fun installFirefox_remotely() {
+        val host = "192.168.56.123"
+        val user = "user"
+        var firefoxVersion = ""
+
+        // when
+        val result = remote(
+            host,
+            user,
+            /* remove for ssh authentication */
+            PromptSecretSource("Remote password for user $user").secret()
+        ).session {
+            installFirefox()
+            firefoxVersion = cmd("apt list firefox --installed").out ?: ""
+            checkPackageInstalled("firefox")
+        }
+
+        // then
+        assertTrue(result.success)
+        println("Firefox: $firefoxVersion")
+        assertTrue(firefoxVersion.contains("ubuntu") && !firefoxVersion.contains("snap"))
+    }
 }