Set 8GB memory limit for updater docker container

The memory limit is denoted in bytes. We opt for the largest firecracker VM size here since certain ecosystems like Python can take a lot of memory to run updates.

src/updater.ts

@@ -145,6 +145,7 @@ export class Updater {
       ],
       Cmd: ['sh', '-c', cmd],
       HostConfig: {
+        Memory: 8 * 1024 * 1024 * 1024, // 8GB in bytes
         NetworkMode: proxy.networkName,
         Binds: [
           `${path.join(__dirname, '../output')}:${JOB_OUTPUT_PATH}:rw`,