compiling fsbl with docker works now! See README

docker/compile_fsbl/Dockerfile

@@ -0,0 +1,15 @@
+FROM debian:12.5
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Install required packages
+RUN apt-get update && apt-get install -y \
+    make \
+    cmake \
+    gcc-arm-none-eabi \
+    && rm -rf /var/lib/apt/lists/* 
+    # Remove the package lists to reduce the image size
+
+
+WORKDIR /project/
+