Remove Cursor from Containerfile, use sysext instead

- Remove Cursor IDE installation from container image
- Delete install-cursor.sh script
- Add install-sysext.sh helper script for local sysext installation

Cursor can now be installed via sysext from the community repo
(PR: fedora-sysexts/community#25)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: shanemcd

install-sysext.sh

@@ -0,0 +1,57 @@
+#!/bin/bash
+# Install a local sysext .raw file
+set -euo pipefail
+
+if [[ $# -ne 1 ]]; then
+    echo "Usage: $0 <path-to-sysext.raw>"
+    exit 1
+fi
+
+RAW_FILE="$1"
+
+if [[ ! -f "$RAW_FILE" ]]; then
+    echo "Error: File not found: $RAW_FILE"
+    exit 1
+fi
+
+if [[ ! "$RAW_FILE" == *.raw ]]; then
+    echo "Error: File must have .raw extension"
+    exit 1
+fi
+
+# Extract sysext name from filename (e.g., cursor-1.2.3-43-x86-64.raw -> cursor)
+BASENAME=$(basename "$RAW_FILE")
+SYSEXT_NAME="${BASENAME%%-[0-9]*}"
+
+# Fallback if pattern doesn't match
+if [[ -z "$SYSEXT_NAME" || "$SYSEXT_NAME" == "$BASENAME" ]]; then
+    SYSEXT_NAME="${BASENAME%.raw}"
+fi
+
+echo "Installing sysext: $SYSEXT_NAME"
+
+# First-time setup
+if [[ ! -d /var/lib/extensions ]]; then
+    echo "Creating /var/lib/extensions..."
+    sudo install -d -m 0755 -o 0 -g 0 /var/lib/extensions
+    sudo restorecon -RFv /var/lib/extensions
+fi
+
+# Enable service if not already
+if ! systemctl is-enabled systemd-sysext.service &>/dev/null; then
+    echo "Enabling systemd-sysext.service..."
+    sudo systemctl enable systemd-sysext.service
+fi
+
+# Copy the sysext
+echo "Copying $RAW_FILE to /var/lib/extensions/${SYSEXT_NAME}.raw..."
+sudo cp "$RAW_FILE" "/var/lib/extensions/${SYSEXT_NAME}.raw"
+sudo restorecon "/var/lib/extensions/${SYSEXT_NAME}.raw"
+
+# Merge
+echo "Merging sysexts..."
+sudo systemctl restart systemd-sysext.service
+
+echo ""
+echo "Done! Status:"
+systemd-sysext status

mybox/Containerfile

@@ -129,9 +129,9 @@ RUN <<EORUN
 EORUN
 
 # =============================================================================
-# Layer 3: Custom Installations (1Password GUI + Cursor)
+# Layer 3: Custom Installations (1Password GUI)
 # =============================================================================
-COPY install-cursor.sh /tmp/
+# Note: Cursor is installed via sysext, see SYSEXTS.md
 
 RUN <<EORUN
     set -euxo pipefail
@@ -156,9 +156,6 @@ RUN <<EORUN
     rm -rf /opt
     mv /opt{.bak,}
 
-    # Cursor IDE
-    bash /tmp/install-cursor.sh
-
     # Cleanup
     rm -rf /var/cache/* /tmp/*
 EORUN