Big boom
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maurice
@@ -1,125 +1,82 @@
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#!/bin/bash
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# =============================================== #
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# devc.sh v2.0; job79, maurice #
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# Dev container enter script. Handles setting up #
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# different dev containers, resuming sessions and #
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# automatic container updates. #
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# devc.sh v2.1; job79, maurice #
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# Dev container entry script. #
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# =============================================== #
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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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set -euo pipefail
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log() { echo -e "\e[36m○\e[0m $1"; }
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die() { echo -e "\e[31mx\e[0m $1" && exit 1; }
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# run_args returns the podman run arguments required for
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# starting a new container.
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# default_args configures standard container options.
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default_args() {
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arg "--name $name"
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arg "--hostname $name"
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run_opts+=(
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"--name" "$name"
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"--hostname" "$name"
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"--network" "devc"
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"--pull=newer" # Update image.
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"--userns=keep-id" # Map host user.
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"-v" "$name:/home/user:copy" # Persistent home volume.
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"-v" "dnf-cache:/var/cache/libdnf5" # Cache dnf metadata.
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)
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# Pull newer container image if available.
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# arg "--pull=newer"
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# Unix sockets require SELinux label disable.
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[[ -d /sys/fs/selinux ]] && run_opts+=("--security-opt" "label=disable")
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# Use keep-id so the container user matches the host user.
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arg "--userns=keep-id"
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# Desktop integration (Wayland, SSH).
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[[ -e "/run/user/$UID/wayland-0" ]] && run_opts+=("-v" "/run/user/$UID/wayland-0:/run/user/1000/wayland-0")
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[[ -e "${SSH_AUTH_SOCK:-}" ]] && run_opts+=("-v" "$SSH_AUTH_SOCK:/run/user/1000/ssh-auth-sock")
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# Disable selinux labeling so unix sockets can be mounted
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# without problems.
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arg "--security-opt label=disable"
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# Mount the wayland socket. Required to get the system
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# clipboard (wl-copy) and gui applications 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 to get ssh working.
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[ -e "$SSH_AUTH_SOCK" ] && arg "-v $SSH_AUTH_SOCK:/run/user/1000/ssh-auth-sock"
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# Make the user home dir a volume so it survives container
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# restarts. Use copy to keep the files from the image.
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arg "-v $name:/home/user:copy"
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# If there is custom configuration for the container, load
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# it here.
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config_file="$(dirname "$(realpath "$0")")/containers/$name/config.sh"
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[ -f "$config_file" ] && source "${config_file}"
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# Load custom container config.
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local config_file="${BASH_SOURCE[0]%/*}/container/config.sh"
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[[ -f "$config_file" ]] && source "$config_file" || true
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}
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# param_args returns the podman run arguments based on the
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# arguments provided to this script.
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# param_args parses CLI arguments into podman run options.
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param_args() {
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while test $# -gt 0; do
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while (($# > 0)); do
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case "$1" in
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-gpu) # Enable gpu acceleration.
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arg "--device /dev/dri" ;;
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-kvm) # Enable KVM
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arg "--device /dev/kvm" ;;
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-usb) # Enable USB access
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arg "--device /dev/bus/usb" ;;
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-host-spawn) # Enable spawning host commands from inside the container using host-spawn.
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arg "-v /run/user/$UID/bus:/tmp/bus"
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arg "-e HOST_HOME=$HOME" # Used to translate paths.
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;;
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-net) # Enable network 'dev-<container name>'' and 'devc'
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arg "--network dev-$name --network devc"
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;;
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-mnt) # Mount directory.
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shift
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arg "-w /workdir/"
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arg "-v $1:/workdir/$([ ! -d "$1" ] && echo $1)"
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;;
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-mdf) # Mount dev folder
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arg "-v $HOME/dev:/home/user/dev"
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;;
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-x11) # Enable X11 support.
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arg "-v /tmp/.X11-unix:/tmp/.X11-unix"
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arg "-v $XAUTHORITY:/run/user/1000/.Xauthority:ro"
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arg "-e DISPLAY=$DISPLAY"
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arg "-e XAUTHORITY=/run/user/1000/.Xauthority"
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;;
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*) # Use unknown arguments a podman arguments.
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arg "$1" ;;
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-gpu) run_opts+=("--device" "/dev/dri") ;;
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-kvm) run_opts+=("--device" "/dev/kvm") ;;
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-usb) run_opts+=("--device" "/dev/bus/usb") ;;
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-host-spawn) run_opts+=("-v" "/run/user/$UID/bus:/tmp/bus" "-e" "HOST_HOME=$HOME") ;;
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-container-sock) run_opts+=("-v" "$XDG_RUNTIME_DIR/podman/podman.sock:/var/run/docker.sock") ;;
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-x11) run_opts+=("-v" "/tmp/.X11-unix:/tmp/.X11-unix" "-v" "$XAUTHORITY:/run/user/1000/.Xauthority:ro" "-e" "DISPLAY=$DISPLAY" "-e" "XAUTHORITY=/run/user/1000/.Xauthority") ;;
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-mnt) shift && run_opts+=("-w" "/mnt/" "-v" "$1:/mnt/$([[ -d "$1" ]] || echo "file")") ;;
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*) run_opts+=("$1") ;;
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esac
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shift
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done
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}
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### MAIN ###
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# Get the devcontainer name from the first argument. If not
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# provided, use the last used name when possible.
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if [[ $# -gt 0 ]] && [[ ${1:-} != -* ]]; then
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image="$1"
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[[ "$image" != *:* ]] && image="$image:main"
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echo "$image" >"$HOME/.local/share/devc-previous-container"
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shift
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elif [ -f "$HOME/.local/share/devc-previous-container" ]; then
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image=$(<"$HOME/.local/share/devc-previous-container")
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else
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log "no container name specified" 'x' 31
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exit 1
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fi
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name="${image%:*}"
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main() {
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local state_file="$HOME/.local/share/devc-previous-container"
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local image="devc"
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# Get container registry from the DEVC_REGISTRY env
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# variable.
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if [ -n "${DEVC_REGISTRY:-}" ]; then
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registry="$DEVC_REGISTRY"
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else
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log "registry unknown; set the DEVC_REGISTRY environment variable" 'x' 31
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exit 1
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fi
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# Resolve container name (CLI arg > Last used > Error).
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if [[ $image && $image != -* ]]; then
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shift
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[[ $image != *:* ]] && image+=":main"
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echo "$image" >"$state_file"
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elif [[ -f $state_file ]]; then
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image=$(<$state_file)
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else
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die "no container name specified"
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fi
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local name="${image%:*}"
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# Get container command from the DEVC_COMMAND env variable
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# if set, else use bash -l.
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if [ -z "${DEVC_COMMAND:-}" ]; then
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DEVC_COMMAND="bash -l"
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fi
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# Start/Restart if not running or if arguments change configuration.
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if [[ -z "$(podman ps -q -f name="^$name$" -f status=running)" ]] || (($# > 0)); then
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log "starting $image..."
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# When container is not running or arguments are provided,
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# recreate it.
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if [ "$(podman container inspect "$name" -f {{.State.Running}} 2>&1)" != 'true' ] || [[ $# -gt 0 ]]; then
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log "starting devcontainer..."
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podman network create --ignore "dev-$name"
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podman network create --ignore "devc"
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podman container rm -f -t 0 "$name" 1>/dev/null
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podman run -td $(default_args) $(param_args $@) "$registry/$image"
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fi
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default_args
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param_args "$@"
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podman exec --detach-keys "ctrl-@" -it "$name" ${DEVC_COMMAND:-}
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[[ -n "${DEVC_REGISTRY:-}" ]] || die "registry unknown; set the DEVC_REGISTRY environment variable"
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podman network create devc --ignore > /dev/null 2>&1
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podman run --replace --stop-timeout 0 -td "${run_opts[@]}" "$DEVC_REGISTRY/$image"
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fi
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exec podman exec --detach-keys "ctrl-@,ctrl-@" -it "$name" ${DEVC_COMMAND:-bash -l}
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}
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main "$@"
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