diff --git a/fedac/native/Dockerfile.builder b/fedac/native/Dockerfile.builder
index d039eb0776..67a0969ede 100644
--- a/fedac/native/Dockerfile.builder
+++ b/fedac/native/Dockerfile.builder
@@ -32,12 +32,12 @@ RUN dnf install -y --setopt=install_weak_deps=False \
     && dnf clean all && rm -rf /var/cache/dnf
 
 # ── Install Quicklisp + CL dependencies for Lisp build variant ──
-RUN curl -sfo /tmp/ql.lisp https://beta.quicklisp.org/quicklisp.lisp \
+RUN mkdir -p /cache \
+    && curl -sfo /tmp/ql.lisp https://beta.quicklisp.org/quicklisp.lisp \
     && sbcl --non-interactive \
        --load /tmp/ql.lisp \
        --eval '(quicklisp-quickstart:install :path "/opt/quicklisp/")' \
        --eval '(ql:quickload (list :cffi :bordeaux-threads :alexandria))' \
-       --eval '(sb-ext:save-lisp-and-die "/cache/sbcl-ql.core" :purify t)' \
     && rm /tmp/ql.lisp
 
 # ── Pre-download QuickJS + Linux kernel source ──
diff --git a/fedac/native/docker-build.sh b/fedac/native/docker-build.sh
index 1d8452e15f..0aa7c16539 100644
--- a/fedac/native/docker-build.sh
+++ b/fedac/native/docker-build.sh
@@ -57,12 +57,10 @@ log "  Binary: $(stat -c%s "$BUILD/ac-native") bytes"
 # ── Optional: Build Common Lisp variant ──
 if [ "${AC_BUILD_LISP:-0}" = "1" ]; then
     log "Step 1b: Building ac-native (Common Lisp)..."
-    SBCL_CORE="/cache/sbcl-ql.core"
-    SBCL_CMD="sbcl"
-    [ -f "$SBCL_CORE" ] && SBCL_CMD="sbcl --core $SBCL_CORE"
     CL_DIR="$NATIVE/cl"
-    # Build standalone binary
-    $SBCL_CMD --non-interactive \
+    # Build standalone binary via SBCL + Quicklisp
+    sbcl --non-interactive \
+        --eval '(load "/opt/quicklisp/setup.lisp")' \
         --eval '(require :asdf)' \
         --eval "(push #P\"$CL_DIR/\" asdf:*central-registry*)" \
         --eval '(asdf:load-system :ac-native)' \