split base build to multiple dockerfiles.

runtime/xorg-deps/xf86-input-neko/Dockerfile

@@ -0,0 +1,22 @@
+FROM debian:bullseye-slim
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN set -eux; \
+    apt-get update; \
+    apt-get install -y \
+        gcc pkgconf autoconf automake libtool make xorg-dev xutils-dev \
+    && rm -rf /var/lib/apt/lists/*;
+
+WORKDIR /app
+
+COPY ./ /app/
+
+RUN set -eux; \
+    ./autogen.sh --prefix=/usr; \
+    ./configure; \
+    make -j$(nproc); \
+    make install;
+
+# docker build -t xf86-input-neko .
+# docker run -v $PWD/build:/app/build --rm xf86-input-neko make install DESTDIR=/app/build