devcontainer/enter.sh

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#!/bin/sh
# =============================================== #
# enter.sh v1.0; job79 #
# Enter into an existing or new dev container and #
# automatically handle dev container updates. #
# =============================================== #
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set -eu
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log() { printf '\e[%sm%s\e[0m %s\n' "${3:-36}" "${2:-}" "$1"; }
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arg() { echo -n " $@"; }
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# run_args returns the arguments required for the podman run
# command.
run_args() {
arg "--name $name"
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# Disable some security settings to make it possible to
# mount host directories without problems.
arg "--security-opt label=disable" # disable labeling so mounts don't need to be labeled.
arg "--userns=keep-id" # required for ~/.ssh which is usually 700.
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# Use host networking.
arg "--net=host"
# Mount the wayland socket. Required to get the system
# clipbard (wl-copy) working.
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[ -e "/run/user/$UID/wayland-0" ] && arg "-v /run/user/$UID/wayland-0:/run/user/1000/wayland-0"
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# Mount the ssh socket, directory and the git config
# directory. This gets the host ssh and git configuration
# working inside the container.
[ -e "$SSH_AUTH_SOCK" ] && arg "-v $SSH_AUTH_SOCK:/run/user/1000/ssh-auth-sock"
[ -d "$HOME/.ssh" ] && arg "-v $HOME/.ssh:/home/user/.ssh"
[ -d "$HOME/.config/git" ] && arg "-v $HOME/.config/git:/home/user/.config/git"
# Mount host directories with programming projects.
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[ -d "$HOME/Code" ] && arg "-v $HOME/Code:/home/user/Code"
[ -d "$HOME/.config/devcontainer" ] && arg "-v $HOME/.config/devcontainer:/home/user/.dev"
# Add volumes for .local and .cache so these survive
# container restarts.
arg "-v $name-local:/home/user/.local"
arg "-v $name-cache:/home/user/.cache"
}
### MAIN ###
name="dev"
image="git.plabble.org/job79/dev:latest"
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fetch=false
while test $# -gt 0; do
case "$1" in
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--image | -i) shift && fetch=true && image="$1" ;;
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--fetch | -f) fetch=true ;;
-*) log "unknown argument '$1'" 'x' 31 ;;
*) name="$1" ;;
esac
shift
done
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if [ "$fetch" = true ] || [ "$(podman container inspect "$name" -f {{.State.Running}} 2>&1)" != 'true' ]; then
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log "fetching devcontainer updates..."
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if [ "$(podman pull -q "$image")" != "$(podman container inspect "$name" -f {{.Image}} 2>&1)" ]; then
log "container image downloaded" '✓' 32
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podman container rm -f -t 1 "$name" 1>/dev/null
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podman run -td $(run_args) "$image"
else
log "no updates available" '✓' 32
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fi
fi
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podman start "$name" 1>/dev/null
podman exec --detach-keys "" -it "$name" bash -l