Add UF2 support (#25)

Author: richardclli

builder/Dockerfile

@@ -27,7 +27,8 @@ RUN python3 -m pip install -U pip setuptools \
     asciitree \
     jinja2 \
     pillow \
-    lz4
+    lz4 \
+    pyelftools
 
 # work-around for datacopy build script in 2.8.5
 RUN ln -s /usr/lib/x86_64-linux-gnu/libclang-14.so.14.0.0 /usr/lib/libclang-14.so && \

dev/Dockerfile

@@ -44,7 +44,8 @@ RUN python3 -m pip install -U pip setuptools \
     jinja2 \
     pillow==7.2.0 \
     aqtinstall \
-    lz4
+    lz4 \
+    pyelftools
 
 # Qt installation adapted from
 # see https://github.com/miurahr/aqtinstall/