Feature/backup+restore (#2613)

* feat: Implementation on the backup for the service.

* wip: Getting the flow of backup/restore

* feat: Recover

* Feature: Commit the full pass on the backup restore.

* use special type for backup instead of special id (#2614)

* fix: Allow compat docker style to run again

* fix: Backup for the js side

* chore: Update some of the callbacks

---------

Co-authored-by: Aiden McClelland <3732071+dr-bonez@users.noreply.github.com>

container-runtime/src/Adapters/Systems/SystemForEmbassy/polyfillEffects.ts

@@ -267,6 +267,7 @@ export class PolyfillEffects implements oet.Effects {
       json: () => fetched.json(),
     }
   }
+
   runRsync(rsyncOptions: {
     srcVolume: string
     dstVolume: string
@@ -277,6 +278,36 @@ export class PolyfillEffects implements oet.Effects {
     id: () => Promise<string>
     wait: () => Promise<null>
     progress: () => Promise<number>
+  } {
+    let secondRun: ReturnType<typeof this._runRsync> | undefined
+    let firstRun = this._runRsync(rsyncOptions)
+    let waitValue = firstRun.wait().then((x) => {
+      secondRun = this._runRsync(rsyncOptions)
+      return secondRun.wait()
+    })
+    const id = async () => {
+      return secondRun?.id?.() ?? firstRun.id()
+    }
+    const wait = () => waitValue
+    const progress = async () => {
+      const secondProgress = secondRun?.progress?.()
+      if (secondProgress) {
+        return (await secondProgress) / 2.0 + 0.5
+      }
+      return (await firstRun.progress()) / 2.0
+    }
+    return { id, wait, progress }
+  }
+  _runRsync(rsyncOptions: {
+    srcVolume: string
+    dstVolume: string
+    srcPath: string
+    dstPath: string
+    options: oet.BackupOptions
+  }): {
+    id: () => Promise<string>
+    wait: () => Promise<null>
+    progress: () => Promise<number>
   } {
     const { srcVolume, dstVolume, srcPath, dstPath, options } = rsyncOptions
     const command = "rsync"