chore: cleanup gitpod setup (#736)

Author: vil02

.gitpod.Dockerfile

@@ -1,7 +1,3 @@
-FROM gitpod/workspace-rust:2023-11-16-11-19-36
+FROM gitpod/workspace-rust:2024-06-05-14-45-28
 
 USER gitpod
-
-RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
-
-RUN rustup default stable

.gitpod.yml

@@ -1,9 +1,11 @@
+---
 image:
   file: .gitpod.Dockerfile
 
 tasks:
-    - init: cargo build
+  - init: cargo build
 
 vscode:
   extensions:
     - rust-lang.rust-analyzer
+...