From bf656ca53cf66f3b03fd89dbdce4fd04bd585fd5 Mon Sep 17 00:00:00 2001
From: rpier1 <59652629+rpier1@users.noreply.github.com>
Date: Wed, 8 Jan 2020 14:31:13 +0100
Subject: [PATCH 1/2] ensure binfmt-support is installed

---
 build-docker.sh | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/build-docker.sh b/build-docker.sh
index 79b68d4..c4a572c 100755
--- a/build-docker.sh
+++ b/build-docker.sh
@@ -3,11 +3,23 @@ DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 
 BUILD_OPTS="$*"
 
-DOCKER="docker"
-
-if ! ${DOCKER} ps >/dev/null 2>&1; then
-	DOCKER="sudo docker"
+SUDO=''
+if [ $EUID != 0 ]; then
+    SUDO='sudo'
 fi
+
+function install_binfmt_support {
+    local binfmtSupport="binfmt-support"
+    if ! dpkg -s $binfmtSupport &>/dev/null; then
+        echo "please install $binfmtSupport with this command: $SUDO apt-get install $binfmtSupport"
+        exit 1
+    fi
+}
+
+install_binfmt_support
+
+DOCKER="$SUDO docker"
+
 if ! ${DOCKER} ps >/dev/null; then
 	echo "error connecting to docker:"
 	${DOCKER} ps

From 8451d871801fbddb9e5020103ffb4c9b5516e712 Mon Sep 17 00:00:00 2001
From: rpier1 <59652629+rpier1@users.noreply.github.com>
Date: Wed, 8 Jan 2020 14:37:29 +0100
Subject: [PATCH 2/2] Docker: load kernelmodules: loop, binfmt_misc

---
 build-docker.sh | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/build-docker.sh b/build-docker.sh
index c4a572c..7e61956 100755
--- a/build-docker.sh
+++ b/build-docker.sh
@@ -16,8 +16,25 @@ function install_binfmt_support {
     fi
 }
 
+function load_kernelmodule {
+    local kernelMod="$1"
+    if ! $SUDO modinfo $kernelMod &>/dev/null; then
+        echo "missing this kernel modul: $kernelMod"
+        exit 1
+    else
+        if $SUDO modprobe -n --first-time $kernelMod &>/dev/null; then
+            echo "loading kernel module $kernelMod"
+            $SUDO modprobe $kernelMod
+        fi
+    fi
+}
+
 install_binfmt_support
 
+load_kernelmodule loop
+load_kernelmodule binfmt_misc
+
+
 DOCKER="$SUDO docker"
 
 if ! ${DOCKER} ps >/dev/null; then