v2023.2.4 and dockerized build

Makefile

@@ -1,6 +1,6 @@
 GLUON_BUILD_DIR := gluon-build
 GLUON_GIT_URL := https://github.com/freifunk-gluon/gluon
-GLUON_GIT_REF := 4e2bd01d5f7ee1677d522e75c3818719e513eb01
+GLUON_GIT_REF := v2023.2.4
 
 PATCH_DIR := ./patches
 

dockerfile_build

@@ -0,0 +1,6 @@
+FROM ubuntu:22.04
+
+ADD ./scripts/install_build_dependencies.sh /
+RUN /install_build_dependencies.sh \
+    && apt-get clean \
+    && rm -r /var/lib/apt/lists/*

patches/targets-raspberry-pi-4.patch

@@ -0,0 +1,26 @@
+diff --git a/targets/bcm27xx-bcm2711 b/targets/bcm27xx-bcm2711
+new file mode 100644
+index 00000000..ba631911
+--- /dev/null
++++ b/targets/bcm27xx-bcm2711
+@@ -0,0 +1,9 @@
++include 'bcm27xx.inc'
++
++device('raspberry-pi-4-model-b', 'rpi-4', {
++	manifest_aliases = {
++		'raspberry-pi-4-model-b-rev-1.1',
++		'raspberry-pi-4-model-b-rev-1.2',
++		'raspberry-pi-4-model-b-rev-1.4',
++	},
++})
+diff --git a/targets/targets.mk b/targets/targets.mk
+index d5f605aa..d27865b0 100644
+--- a/targets/targets.mk
++++ b/targets/targets.mk
+@@ -25,5 +25,6 @@ $(eval $(call GluonTarget,x86,64))
+ 
+ ifeq ($(BROKEN),1)
+ $(eval $(call GluonTarget,bcm27xx,bcm2710)) # BROKEN: Untested
++$(eval $(call GluonTarget,bcm27xx,bcm2711)) # BROKEN: Untested
+ $(eval $(call GluonTarget,mvebu,cortexa9)) # BROKEN: No 11s support
+ endif

scripts/install_build_dependencies.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env sh
+
+set -eux
+
+# Verify that the script is running in Ubuntu
+. /etc/lsb-release
+if [ "$DISTRIB_ID" != "Ubuntu" ]; then
+    echo "Error: This script only works in Ubuntu"
+    exit 1
+fi
+
+# Avoid tzdata from asking which timezone to choose
+export DEBIAN_FRONTEND=noninteractive
+
+apt-get update
+
+# ca-certificates required for Github git cloning
+apt-get -y --no-install-recommends install ca-certificates
+
+# Install build environment
+apt-get -y --no-install-recommends install \
+    bash \
+    bzip2 \
+    curl \
+    diffutils \
+    file \
+    g++ \
+    gawk \
+    gcc \
+    git \
+    libncurses5-dev \
+    make \
+    patch \
+    perl \
+    python3 \
+    qemu-utils \
+    rsync \
+    tar \
+    unzip \
+    wget