ISO fix and update.

.github/workflows/ci.yml

@@ -148,7 +148,7 @@ jobs:
         run: sudo chown -R "$(id -u):$(id -g)" mkosi.output/
 
       - name: Save kernel cache
-        if: github.ref == 'refs/heads/main'
+        if: github.ref == 'refs/heads/main' && steps.kernel-cache.outputs.cache-hit != 'true'
         uses: actions/cache/save@v4
         with:
           path: |
@@ -198,7 +198,7 @@ jobs:
         run: ./build.py tools
 
       - name: Save tools cache
-        if: github.ref == 'refs/heads/main'
+        if: github.ref == 'refs/heads/main' && steps.tools-cache.outputs.cache-hit != 'true'
         uses: actions/cache/save@v4
         with:
           path: |
@@ -245,6 +245,13 @@ jobs:
           name: tools-${{ matrix.arch }}
           path: mkosi.output/tools/${{ matrix.arch }}
 
+      - name: Restore tool binary permissions
+        run: |
+          # GitHub Actions artifact upload/download strips execute permissions.
+          # Restore +x on all tool binaries so they work inside the initramfs.
+          chmod +x mkosi.output/tools/${{ matrix.arch }}/usr/local/bin/*
+          chmod +x mkosi.output/tools/${{ matrix.arch }}/opt/cni/bin/*
+
       - name: Refresh apt cache
         run: sudo apt-get update
 

captain/cli/_commands.py

@@ -123,7 +123,6 @@ def _clean_version(cfg: Config, clog: StageLogger) -> None:
         mkosi_output / "kernel" / kver / cfg.arch,
         mkosi_output / "initramfs" / kver / cfg.arch,
         mkosi_output / "iso" / kver / cfg.arch,
-        mkosi_output / "iso-staging" / kver / cfg.arch,
     ]
 
     has_docker = shutil.which("docker") is not None
@@ -195,13 +194,12 @@ def _clean_all(cfg: Config, clog: StageLogger) -> None:
                     " /work/mkosi.output/kernel"
                     " /work/mkosi.output/tools"
                     " /work/mkosi.output/iso"
-                    " /work/mkosi.output/iso-staging"
                     " /work/mkosi.cache",
                 ],
             )
     else:
         # No Docker available — remove directly (may need sudo for root-owned mkosi files)
-        for pattern in ("image*", "initramfs", "kernel", "tools", "iso", "iso-staging"):
+        for pattern in ("image*", "initramfs", "kernel", "tools", "iso"):
             for p in mkosi_output.glob(pattern):
                 if p.is_dir():
                     shutil.rmtree(p, ignore_errors=True)

captain/cli/_stages.py

@@ -188,7 +188,6 @@ def _build_iso_stage(cfg: Config) -> None:
         isolog,
         [
             "/work/mkosi.output/iso",
-            "/work/mkosi.output/iso-staging",
             "/work/out",
         ],
     )

captain/config.py

@@ -198,4 +198,4 @@ def iso_output(self) -> Path:
     @property
     def iso_staging(self) -> Path:
         """Per-version, per-arch staging directory for assembling the ISO filesystem."""
-        return self.project_dir / "mkosi.output" / "iso-staging" / self.kernel_version / self.arch
+        return self.iso_output / "staging"

captain/iso.py

@@ -65,7 +65,7 @@ def build(cfg: Config) -> None:
 
     The ISO layout is::
 
-        iso-staging/{arch}/
+        iso/{version}/{arch}/staging/
         ├── boot/
         │   ├── grub/
         │   │   └── grub.cfg

mkosi.finalize

@@ -36,6 +36,18 @@ if [[ -f "$BUILDROOT/init" ]]; then
     echo "    /init made executable"
 fi
 
+# Ensure tool binaries are executable.
+# GitHub Actions artifact upload/download and some archive tools strip
+# the execute bit.  Re-apply +x to every tool directory so containerd,
+# runc, nerdctl, and CNI plugins can actually run.
+for dir in usr/local/bin opt/cni/bin; do
+    target="$BUILDROOT/$dir"
+    if [[ -d "$target" ]]; then
+        find "$target" -type f -exec chmod +x {} +
+        echo "    +x restored on $dir/*"
+    fi
+done
+
 # ---------------------------------------------------------------------------
 # Trim kernel modules not needed for provisioning.
 # The kernel is built with a broad defconfig (modules as =m) so the full set