try fixing ra

.devcontainer/Dockerfile

@@ -1,7 +1,16 @@
-# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.140.1/containers/rust/.devcontainer/base.Dockerfile
+FROM ubuntu:18.04
 
-FROM mcr.microsoft.com/vscode/devcontainers/rust:0-1
+RUN apt-get update
+RUN apt-get install -y \
+  curl \
+  git \
+  gnupg2 \
+  jq \
+  sudo \
+  zsh \
+  vim \
+  build-essential \
+  openssl
+RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
 
-# [Optional] Uncomment this section to install additional packages.
-# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
-#     && apt-get -y install --no-install-recommends <your-package-list-here>
+ENV PATH="/root/.cargo/bin:$PATH"

.devcontainer/devcontainer.json

@@ -5,11 +5,6 @@
 	"build": {
 		"dockerfile": "Dockerfile"
 	},
-	"runArgs": [
-		"--cap-add=SYS_PTRACE",
-		"--security-opt",
-		"seccomp=unconfined"
-	],
 	// Set *default* container specific settings.json values on container create.
 	"settings": {
 		"terminal.integrated.shell.linux": "/bin/bash",
@@ -22,11 +17,10 @@
 	// Add the IDs of extensions you want installed when the container is created.
 	"extensions": [
 		"matklad.rust-analyzer",
-		"bungcip.better-toml",
 		"vadimcn.vscode-lldb",
 		"mutantdino.resourcemonitor",
 		"serayuzgur.crates",
-		"a5huynh.vscode-ron"
+		"ms-vsliveshare.vsliveshare"
 	]
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
 	// "forwardPorts": [],