Strange bash chars are printed after opening a shell in devcontainer

[irizzant]

What happened?

I have generated a devcontainer file with devbox generate devcontainer starting from the attached devbox json.

This is the generated devcontainer:

{
  "name": "Devbox Remote Container",
  "build": {
    "dockerfile": "./Dockerfile",
    "context": ".."
  },
  "customizations": {
    "vscode": {
      "settings": {},
      "extensions": [
        "jetpack-io.devbox",
        "github.vscode-github-actions",
        "eamodio.gitlens",
        "GitHub.vscode-pull-request-github",
        "jawandarajbir.react-vscode-extension-pack"
      ]
    }
  },
  "remoteUser": "devbox"
}

This is the Dockerfile:

FROM jetpackio/devbox:latest

# Installing your devbox project
WORKDIR /code
USER root:root
RUN mkdir -p /code && chown ${DEVBOX_USER}:${DEVBOX_USER} /code
USER ${DEVBOX_USER}:${DEVBOX_USER}
COPY --chown=${DEVBOX_USER}:${DEVBOX_USER} devbox.json devbox.json
COPY --chown=${DEVBOX_USER}:${DEVBOX_USER} devbox.lock devbox.lock
COPY --chown=${DEVBOX_USER}:${DEVBOX_USER} backstage backstage



RUN devbox run -- echo "Installed Packages."

RUN devbox shellenv --init-hook >> ~/.profile

When I open the devcontainer I get:

\[\]\[\]\[\]devbox@771da220af86\[\]:\[\]/workspaces/backstage\[\]$ \[\]

Please note the \[\]$ \[\] and \[\]\[\]\[\].

When I then run devbox shell these chars go away and I get:

Starting a devbox shell...
(devbox) devbox@09a6ebd1546a:/workspaces/backstage$

Steps to reproduce

Command

generate

devbox.json

{
  "$schema": "https://raw.githubusercontent.com/jetify-com/devbox/0.14.0/.schema/devbox.schema.json",
  "packages": [
    "nushell@latest",
    "nodejs@20"
  ],
  "shell": {
    "init_hook": [
      "chmod +x backstage",
      "export PATH=$PATH:$PWD"
    ],
    "scripts": {
      "test": [
        "echo \"Error: no test specified\" && exit 1"
      ]
    }
  },
  "env": {
    "DEVBOX_COREPACK_ENABLED": "true"
  }
}

Devbox version

0.14.0

Nix version

nix (Nix) 2.28.1

What system does this bug occur on?

Linux (x86-64)

Debug logs

No response