chore: use the official docker enarx image

Signed-off-by: Nicholas Farshidmehr <[email protected]>

src/main.rs

@@ -78,7 +78,7 @@ static JOBS: Lazy<RwLock<Jobs>> = Lazy::new(Default::default);
 // TODO: raise this when this is fixed: https://github.com/profianinc/benefice/issues/75
 const READ_TIMEOUT: Duration = Duration::from_millis(500);
 const TOML_MAX: usize = 256 * 1024; // 256 KiB
-const ENARX_DOCKER_IMAGE_TAG: &str = "enarx:0.6.3";
+const ENARX_DOCKER_IMAGE_TAG: &str = "enarx/enarx:0.6.3";
 
 lazy_static! {
     static ref EXAMPLES: Vec<&'static str> = include_str!("../examples.txt")