Add auto-install for missing prerequisites

- New lib/prereqs.sh: detects distro (Arch, Debian/Ubuntu, RHEL/Fedora,
  openSUSE) and installs git + podman/docker if missing
- Podman preferred over docker; user chooses if neither present
- Docker install also enables systemd service and adds user to docker group
- README updated: prereqs table now shows auto-install support

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Eli 2026-03-09 12:05:08 +01:00
commit 452a603cdf
3 changed files with 154 additions and 20 deletions

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@ -23,12 +23,16 @@ Open in devcontainer → start Context Studio → talk to your agent team.
## 📋 Prerequisites
| | Tool | Purpose |
| | Tool | Notes |
|---|------|---------|
| 🔀 | `git` | Clone repos |
| 🐳 | `docker` or `podman` | Run devcontainer |
| 🔑 | SSH key → `github.com` | Access context-studio-core |
| 🗝️ | `ANTHROPIC_API_KEY` | Claude agents |
| 🔀 | `git` | Auto-installed if missing |
| 🐳 | `podman` _(preferred)_ or `docker` | Auto-installed if missing |
| 🔑 | SSH key → `github.com` | Must be set up manually |
| 🗝️ | `ANTHROPIC_API_KEY` | Must be set in your environment |
**Auto-install supported on:** Arch · Debian/Ubuntu · RHEL/Fedora · openSUSE
> The wizard detects your distro and installs `git` and `podman`/`docker` automatically if they are missing. SSH key and API key must be set up by you.
---

144
lib/prereqs.sh Normal file
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@ -0,0 +1,144 @@
#!/usr/bin/env bash
# prereqs.sh — detect distro, install missing prerequisites
# Detect package manager / distro family
detect_distro() {
if command -v pacman &>/dev/null; then echo "arch";
elif command -v apt-get &>/dev/null; then echo "debian";
elif command -v dnf &>/dev/null; then echo "rhel";
elif command -v yum &>/dev/null; then echo "rhel-yum";
elif command -v zypper &>/dev/null; then echo "suse";
else echo "unknown";
fi
}
install_pkg() {
local pkg="$1"
local distro
distro="$(detect_distro)"
info "Installing $pkg (distro: $distro)..."
case "$distro" in
arch)
sudo pacman -Sy --noconfirm "$pkg" ;;
debian)
sudo apt-get update -qq && sudo apt-get install -y "$pkg" ;;
rhel)
sudo dnf install -y "$pkg" ;;
rhel-yum)
sudo yum install -y "$pkg" ;;
suse)
sudo zypper install -y "$pkg" ;;
*)
die "Unsupported distro — please install $pkg manually." ;;
esac
}
ensure_git() {
if command -v git &>/dev/null; then
success "git: $(git --version)"
return
fi
warn "git not found."
ask_yn _install "Install git now?" "y"
[[ "$_install" != "y" ]] && die "git is required."
install_pkg git
command -v git &>/dev/null || die "git installation failed."
success "git installed: $(git --version)"
}
ensure_container_runtime() {
# Already available?
if command -v podman &>/dev/null; then
CONTAINER_CMD="podman"
success "podman: $(podman --version)"
return
fi
if command -v docker &>/dev/null; then
CONTAINER_CMD="docker"
success "docker: $(docker --version | head -1)"
return
fi
warn "No container runtime found (podman or docker)."
echo ""
echo -e " ${CYAN}podman${RESET} is preferred (rootless, no daemon)"
echo -e " ${CYAN}docker${RESET} is the alternative"
echo ""
ask_choice _runtime "Which would you like to install?" \
"podman (recommended)" \
"docker"
case "$_runtime" in
podman*)
_install_podman
CONTAINER_CMD="podman"
;;
docker*)
_install_docker
CONTAINER_CMD="docker"
;;
esac
command -v "$CONTAINER_CMD" &>/dev/null \
|| die "$CONTAINER_CMD installation failed. Please install manually."
success "$CONTAINER_CMD installed: $($CONTAINER_CMD --version | head -1)"
}
_install_podman() {
local distro
distro="$(detect_distro)"
case "$distro" in
arch) install_pkg podman ;;
debian) install_pkg podman ;;
rhel) install_pkg podman ;;
rhel-yum) install_pkg podman ;;
suse) install_pkg podman ;;
*) die "Unsupported distro — install podman manually: https://podman.io/getting-started/installation" ;;
esac
}
_install_docker() {
local distro
distro="$(detect_distro)"
case "$distro" in
arch)
install_pkg docker
sudo systemctl enable --now docker
sudo usermod -aG docker "$USER"
warn "Added $USER to docker group — log out and back in for it to take effect."
;;
debian)
install_pkg docker.io
sudo systemctl enable --now docker
sudo usermod -aG docker "$USER"
warn "Added $USER to docker group — log out and back in for it to take effect."
;;
rhel)
install_pkg docker
sudo systemctl enable --now docker
sudo usermod -aG docker "$USER"
warn "Added $USER to docker group — log out and back in for it to take effect."
;;
rhel-yum)
install_pkg docker
sudo systemctl enable --now docker
sudo usermod -aG docker "$USER"
warn "Added $USER to docker group — log out and back in for it to take effect."
;;
suse)
install_pkg docker
sudo systemctl enable --now docker
sudo usermod -aG docker "$USER"
warn "Added $USER to docker group — log out and back in for it to take effect."
;;
*)
die "Unsupported distro — install docker manually: https://docs.docker.com/engine/install/" ;;
esac
}
check_prerequisites() {
header "Checking Prerequisites"
ensure_git
ensure_container_runtime
}

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@ -7,25 +7,11 @@ set -euo pipefail
WIZARD_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "$WIZARD_DIR/lib/utils.sh"
source "$WIZARD_DIR/lib/prereqs.sh"
source "$WIZARD_DIR/lib/core.sh"
source "$WIZARD_DIR/lib/project.sh"
source "$WIZARD_DIR/lib/workflow.sh"
# ── Prerequisites ──────────────────────────────────────────────────────────
check_prerequisites() {
header "Checking Prerequisites"
require_cmd git
if command -v docker &>/dev/null; then
CONTAINER_CMD="docker"
elif command -v podman &>/dev/null; then
CONTAINER_CMD="podman"
else
die "Neither docker nor podman found. Install one to use devcontainers."
fi
success "git: $(git --version)"
success "$CONTAINER_CMD: $($CONTAINER_CMD --version | head -1)"
}
# ── Project info ───────────────────────────────────────────────────────────
collect_project_info() {
header "Project Details"