Add script for building u-boot
Signed-off-by: Joel Stanley <joel@jms.id.au>
diff --git a/u-boot-build.sh b/u-boot-build.sh
new file mode 100755
index 0000000..79f7238
--- /dev/null
+++ b/u-boot-build.sh
@@ -0,0 +1,74 @@
+#!/bin/bash
+
+# This build script is for running the Jenkins builds using docker.
+
+# Trace bash processing
+set -x
+
+# Default variables
+WORKSPACE=${WORKSPACE:-${HOME}/${RANDOM}${RANDOM}}
+BOARD_DEFCONFIG=${BOARD_DEFCONFIG:-ast_g5_defconfig}
+http_proxy=${http_proxy:-}
+
+# Timestamp for job
+echo "Build started, $(date)"
+
+# Configure docker build
+if [[ -n "${http_proxy}" ]]; then
+PROXY="RUN echo \"Acquire::http::Proxy \\"\"${http_proxy}/\\"\";\" > /etc/apt/apt.conf.d/000apt-cacher-ng-proxy"
+fi
+
+Dockerfile=$(cat << EOF
+FROM ubuntu:16.04
+
+${PROXY}
+
+ENV DEBIAN_FRONTEND noninteractive
+RUN apt-get update && apt-get install -yy \
+ make bc gcc gcc-arm-linux-gnueabi
+
+RUN grep -q ${GROUPS} /etc/group || groupadd -g ${GROUPS} ${USER}
+RUN grep -q ${UID} /etc/passwd || useradd -d ${HOME} -m -u ${UID} -g ${GROUPS} ${USER}
+
+USER ${USER}
+ENV HOME ${HOME}
+RUN /bin/bash
+EOF
+)
+
+# Build the docker container
+docker build -t u-boot-build/ubuntu - <<< "${Dockerfile}"
+if [[ "$?" -ne 0 ]]; then
+ echo "Failed to build docker container."
+ exit 1
+fi
+
+# Create the docker run script
+export PROXY_HOST=${http_proxy/#http*:\/\/}
+export PROXY_HOST=${PROXY_HOST/%:[0-9]*}
+export PROXY_PORT=${http_proxy/#http*:\/\/*:}
+
+mkdir -p ${WORKSPACE}
+
+cat > "${WORKSPACE}"/build.sh << EOF_SCRIPT
+#!/bin/bash
+
+set -x
+
+cd ${WORKSPACE}
+
+gcc --version
+arm-linux-gnueabi-gcc --version
+
+# Go into the source directory (the script will put us in a build subdir)
+cd u-boot
+CROSS_COMPILE=arm-linux-gnueabi- make ${BOARD_DEFCONFIG}
+CROSS_COMPILE=arm-linux-gnueabi- make
+
+EOF_SCRIPT
+
+chmod a+x ${WORKSPACE}/build.sh
+
+# Run the docker container, execute the build script we just built
+docker run --rm=true -e WORKSPACE=${WORKSPACE} --user="${USER}" \
+ -w "${HOME}" -v "${HOME}":"${HOME}" -t u-boot-build/ubuntu ${WORKSPACE}/build.sh