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Oh My Zsh Installer for Docker

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This is a script to automate Oh My Zsh installation in development containers. Works with any image based on Alpine, Ubuntu, Debian, Amazon Linux, RockyLinux 8,9 and Fedora.

The original goal was to simplify setting up zsh and Oh My Zsh in a Docker image for use with VSCode's Remote Containers extension, but it can be used whenever you need a simple way to install Oh My Zsh and its plugins in a Docker image

Usage

One line installation: add the following line in your Dockerfile:

# Default powerline10k theme, no plugins installed
RUN sh -c "$(wget -O- https://github.com/deluan/zsh-in-docker/releases/download/v1.2.0/zsh-in-docker.sh)"

Optional arguments:

  • -t <theme> - Selects the theme to be used. Options are available here. By default the script installs and uses Powerlevel10k, one of the "fastest and most awesome" themes for zsh. This is my recommended theme. If <theme> is a url, the script will try to install the theme using git clone.

  • -p <plugin> - Specifies a plugin to be configured in the generated .zshrc. List of bundled Oh My Zsh plugins are available here. If <plugin> is a url, the script will try to install the plugin using git clone.

  • -a <line> - You can add extra lines at the end of the generated .zshrc (but before loading oh-my-zsh) by passing one -a argument for each line you want to add. This is useful to customize plugins or themes. For example, if you want to enable case sensitive completion:

    RUN sh -c "$(wget -O- https://github.com/deluan/zsh-in-docker/releases/download/v1.2.0/zsh-in-docker.sh)" -- \
-a 'CASE_SENSITIVE="true"'

  • -x - Skip installation of dependencies: zsh, git, curl. If you are having issues with the script failing to install these dependencies due to sudo permissions, you can install them yourself in a prior step, and use this flag to make the script skip their installation

Examples:

# Uses "robbyrussell" theme (original Oh My Zsh theme), with no plugins
RUN sh -c "$(wget -O- https://github.com/deluan/zsh-in-docker/releases/download/v1.2.0/zsh-in-docker.sh)" -- \
    -t robbyrussell
# Uses "git", "ssh-agent" and "history-substring-search" bundled plugins
RUN sh -c "$(wget -O- https://github.com/deluan/zsh-in-docker/releases/download/v1.2.0/zsh-in-docker.sh)" -- \
    -p git -p ssh-agent -p 'history-substring-search' \
    -a 'bindkey "\$terminfo[kcuu1]" history-substring-search-up' \
    -a 'bindkey "\$terminfo[kcud1]" history-substring-search-down'

# Uses "Spaceship" theme with some customization. Uses some bundled plugins and installs some more from github
RUN sh -c "$(wget -O- https://github.com/deluan/zsh-in-docker/releases/download/v1.2.0/zsh-in-docker.sh)" -- \
    -t https://github.com/denysdovhan/spaceship-prompt \
    -a 'SPACESHIP_PROMPT_ADD_NEWLINE="false"' \
    -a 'SPACESHIP_PROMPT_SEPARATE_LINE="false"' \
    -p git \
    -p ssh-agent \
    -p https://github.com/zsh-users/zsh-autosuggestions \
    -p https://github.com/zsh-users/zsh-completions

Notes

  • The examples above use wget, but if you prefer curl, just replace wget -O- with curl -L
  • This scripts requires git and curl to work properly. If your Dockerfile uses root as the main user, it should be fine, as the script will install them automatically. If you are using a non-root user, make sure to install the sudo package OR to install git and curl packages before calling this script. In case sudo access is an issue and you already have zsh, git and curl, you can use the option -x to skip the installations.
  • By default this script will install the powerlevel10k theme, as it is one of the fastest and most customizable themes available for zsh. If you want the default Oh My Zsh theme, use the option -t robbyrussell

Liked it?

If you like this script, feel free to thank me with a coffee (or a beer 😉):

ko-fi