Add one-command Yocto shell helper

README.md

@@ -54,6 +54,14 @@ cd poky
 bitbake u-boot device-tree linux-xlnx core-image-elphel393
 ```
 
+Open a ready-to-use Yocto shell (env preloaded):
+
+```bash
+./scripts/yocto_shell.sh
+# then:
+bitbake linux-xlnx
+```
+
 Bootstrap workspace in developer mode:
 
 ```bash

scripts/yocto_shell.sh

+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+"${SCRIPT_DIR}/run_docker.sh" bash -lc '
+set -e
+cd /work/elphel393/poky
+set +u
+. ./oe-init-build-env build
+set -u
+export DL_DIR=/cache/downloads
+export SSTATE_DIR=/cache/sstate-cache
+echo "Yocto shell is ready. Run: bitbake <target>"
+exec bash -i
+'