ci: add unit tests Dockerfile

tools/ci/images/unit_tests/Dockerfile

@@ -0,0 +1,37 @@
+FROM alpine:latest
+
+RUN apk add --no-cache \
+    bash \
+    clang \
+    llvm \
+    cmake \
+    git \
+    make \
+    g++ \
+    python3 \
+    py3-pip \
+    mesa-dev \
+    mesa-gl \
+    pkgconf
+
+
+RUN pip install --no-cache-dir --break-system-packages conan gitpython \
+    && conan profile detect
+
+RUN clang --version  \
+    && conan --version \
+    && pip --version \
+    && cmake --version \
+    && clang --version
+
+
+RUN git clone 'https://git.light7734.com/light7734/light.git' --recursive \
+    && cd light \
+    && conan install . \
+        -s build_type=Debug \
+        -c tools.system.package_manager:mode=install \
+        --build=missing \
+    && conan install . \
+        -s build_type=Release \
+        -c tools.system.package_manager:mode=install \
+        --build=missing