Implement support for podmans userns option (#1566)

Co-authored-by: Daniel Wagenknecht <dwagenknecht@emlix.com>

Author: dwagenk

src/argv.ts

@@ -207,6 +207,10 @@ export class Argv {
         return this.map.get("umask") ?? true;
     }
 
+    get userns (): string | undefined {
+        return this.map.get("userns");
+    }
+
     get privileged (): boolean {
         return this.map.get("privileged") ?? false;
     }

src/index.ts

@@ -202,6 +202,11 @@ process.on("SIGUSR2", async () => await cleanupJobResources(jobs));
             description: "Sets docker user to 0:0",
             requiresArg: false,
         })
+        .option("userns", {
+            type: "string",
+            description: "Set docker executor userns option",
+            requiresArg: false,
+        })
         .option("privileged", {
             type: "boolean",
             description: "Set docker executor to privileged mode",

src/job.ts

@@ -845,6 +845,10 @@ export class Job {
                 dockerCmd += "--user 0:0 ";
             }
 
+            if (this.argv.userns != undefined) {
+                dockerCmd += `--userns=${this.argv.userns} `;
+            }
+
             if (this.argv.containerMacAddress) {
                 dockerCmd += `--mac-address "${this.argv.containerMacAddress}" `;
             }
@@ -1405,6 +1409,10 @@ export class Job {
             dockerCmd += "--user 0:0 ";
         }
 
+        if (this.argv.userns != undefined) {
+            dockerCmd += `--userns=${this.argv.userns} `;
+        }
+
         if (this.argv.privileged) {
             dockerCmd += "--privileged ";
         }