diff --git a/.gitignore b/.gitignore
index 73d3d75..66f404c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,4 +6,3 @@
 99-replicate
 99-podman-kode
 99-eulerpool
-99-doffin
diff --git a/20-build-tools b/20-ninja
similarity index 57%
rename from 20-build-tools
rename to 20-ninja
index 17720ea..5f82b3a 100755
--- a/20-build-tools
+++ b/20-ninja
@@ -1,20 +1,12 @@
 # shellcheck shell=bash
-# Build tool settings: Ninja/CMake, sccache, Podman/Buildah
-
+# Configure C/C++ build tools:
+# - Use Ninja instead of Make for CMake builds (faster parallel builds)
+# - Use ccache to cache compilations and speed up rebuilds
 if command -v ninja &>/dev/null; then
     export NINJA_STATUS="[%e sec | %p (%u remaining) | %o / sec] "
     export CMAKE_GENERATOR=Ninja
 fi
-
 if command -v ccache &>/dev/null; then
     export CMAKE_C_COMPILER_LAUNCHER=ccache
     export CMAKE_CXX_COMPILER_LAUNCHER=ccache
 fi
-
-if command -v sccache &>/dev/null; then
-    export SCCACHE_CACHE_SIZE="40G"
-fi
-
-if command -v podman &>/dev/null; then
-    export BUILDAH_FORMAT=docker
-fi
diff --git a/20-ollama b/20-ollama
index edf67d3..3f3b49d 100755
--- a/20-ollama
+++ b/20-ollama
@@ -1,3 +1,3 @@
 # shellcheck shell=bash
 # Point Ollama CLI at the remote Ollama server (default: goblin:11434)
-export OLLAMA_HOST="${OLLAMA_HOST:-100.70.100.115:11434}"
+export OLLAMA_HOST="${OLLAMA_HOST:-192.168.1.84:11434}"
diff --git a/20-sccache b/20-sccache
new file mode 100755
index 0000000..1f98288
--- /dev/null
+++ b/20-sccache
@@ -0,0 +1,5 @@
+# shellcheck shell=bash
+# Configure sccache (shared compilation cache)
+if command -v sccache &>/dev/null; then
+    export SCCACHE_CACHE_SIZE="40G"
+fi
diff --git a/99-doffin.example b/99-doffin.example
deleted file mode 100644
index 26cfe3e..0000000
--- a/99-doffin.example
+++ /dev/null
@@ -1,5 +0,0 @@
-# shellcheck shell=bash
-# Doffin API key
-# Copy to 99-doffin and fill in your key, then: chmod 700 99-doffin
-#require_private "${BASH_SOURCE[0]}"
-export DOFFIN_API_KEY=your-api-key-here