Fix issue where large files can be written to exhaust space

**BREAKING CHANGE**
Requires manually editing the config file, or deleting the config file entirely!

api/src/config.js

@@ -102,6 +102,12 @@ const options = [
         default: 2048,
         validators: []
     },
+    {
+        key: 'max_file_size',
+        desc: 'Max file size in bytes for a file',
+        default: 1000000, //1MB
+        validators: []
+    },
     {
         key: 'repo_url',
         desc: 'URL of repo index',

api/src/job.js

@@ -74,7 +74,8 @@ class Job {
             const prlimit = [
                 'prlimit',
                 '--nproc=' + config.max_process_count,
-                '--nofile=' + config.max_open_files
+                '--nofile=' + config.max_open_files,
+                '--fsize=' + config.max_file_size
             ];
 
             const proc_call = [
@@ -185,7 +186,7 @@ class Job {
     async cleanup() {
         logger.info(`Cleaning up job uuid=${this.uuid}`);
         await fs.rm(this.dir, { recursive: true, force: true });
-        let processes = [1]
+        let processes = [1];
         while(processes.length > 0){
 
             processes = await ps_list();