Give each kas repo its own path (all three shared extern/, clobbering each other)

.gitea/workflows/build.yaml

@@ -92,15 +92,21 @@ jobs:
           set -euo pipefail
           export YOCTO_HOME="${YOCTO_HOME:-$HOME/yocto-build}"
           cd "$YOCTO_HOME/yocto_rpi"
-          IMG_DIR="build/*/tmp/deploy/images/raspberrypi4-64"
-          ls -lh $IMG_DIR
+          IMG_DIR="$(find build -type d -path '*/tmp/deploy/images/raspberrypi4-64' | head -1)"
+          if [ -z "$IMG_DIR" ]; then
+            echo "::error::no deploy dir found under build/"
+            exit 1
+          fi
+          echo "images in: $IMG_DIR"
+          ls -lh "$IMG_DIR"
           mkdir -p "$GITEA_WORKSPACE/dist"
-          cp $IMG_DIR/* "$GITEA_WORKSPACE/dist/"
+          # only the image artefacts, not the million symlinks/cache dirs
+          find "$IMG_DIR" -maxdepth 1 -type f \( -name '*.wic*' -o -name '*.ext4*' -o -name '*.rootfs*' -o -name '*.tar.bz2' -o -name '*.dtb' -o -name 'Image*' -o -name 'modules*' \) -exec cp -av {} "$GITEA_WORKSPACE/dist/" \;
           {
             echo "## RPi4 image built"
             echo
             echo "- commit: ${GITEA_SHA}"
-            echo "- images also on the runner host at: \`$YOCTO_HOME/yocto_rpi/$IMG_DIR\`"
+            echo "- build tree on runner host: \`$YOCTO_HOME/yocto_rpi/$IMG_DIR\`"
           } >> "$GITEA_STEP_SUMMARY"
 
       - name: Upload images