build: add Dockerfile

Dockerfile

@@ -0,0 +1,20 @@
+FROM ubuntu:24.04
+
+# Install dependencies
+RUN apt update && apt install -y \
+    g++ \
+    g++-aarch64-linux-gnu \
+    g++-arm-linux-gnueabi \
+    g++-powerpc-linux-gnu \
+    gcc \
+    gcc-aarch64-linux-gnu \
+    gcc-arm-linux-gnueabi \
+    gcc-powerpc-linux-gnu \
+    m4  \
+    make \
+    patch \
+    texinfo \
+    wget \
+    xz-utils
+
+WORKDIR /app/gdb