utils: docker: add files for using docker as building-environment

utils/docker/Dockerfile

@@ -0,0 +1,33 @@
+FROM ubuntu:noble
+
+RUN apt-get update               \
+ && apt-get -y -q upgrade        \
+ && apt-get -y -q install        \
+    bc                           \
+    bison                        \
+    build-essential              \
+    ccache                       \
+    flex                         \
+    gcc-arm-linux-gnueabihf      \
+    gcc-aarch64-linux-gnu        \
+    git                          \
+    libc6-armhf-cross            \
+    libncurses-dev               \
+    libssl-dev                   \
+    make                         \
+    u-boot-tools                 \
+    wget                         \
+    xz-utils                     \
+    libncurses-dev               \
+    nano                         \
+    sudo                         \
+    kmod                         \
+    debhelper rsync cpio         \
+ && apt-get clean
+
+RUN usermod -aG sudo ubuntu && \
+    echo 'ubuntu ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
+
+RUN mkdir -p /srv/code && chmod a+rwx -R /srv
+
+WORKDIR /srv/code

utils/docker/build_container.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+DIR=$(dirname "$(readlink -f "$0")")
+
+docker build "$DIR" --tag bpi-cross-compile:1

utils/docker/run.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+DIR=$(dirname "$(readlink -f "$0")")
+REPO_DIR="$DIR/../.."
+
+export UID=$(id -u)
+export GID=$(id -g)
+
+mkdir -p "$REPO_DIR/SD"
+docker run --privileged -it \
+	--user $UID:$GID \
+	-v "$REPO_DIR/SD":/srv/SD \
+	-v "$REPO_DIR":/srv/code \
+	bpi-cross-compile:1 /bin/bash