From 80042bd00f5acdd579196914c51e58bf9c473444 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Brey?= <alvaro.brv@gmail.com>
Date: Wed, 19 Apr 2017 18:10:56 +0200
Subject: [PATCH] Ensure build user has the same UID and GID as the host user

This prevents permission problems since volum owners are set from host
---
 Dockerfile | 8 +++++++-
 run.sh     | 4 +++-
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 3bf92bf..95236eb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,7 +21,13 @@ RUN apt-get install -y android-tools-adb android-tools-fastboot
 RUN apt-get install -y bc bsdmainutils file screen
 RUN apt-get install -y bash-completion wget nano
 
-RUN useradd build && rsync -a /etc/skel/ /home/build/
+ARG hostuid=1000
+ARG hostgid=1000
+
+RUN \
+    groupadd build -g $hostgid && \
+    useradd build -g $hostgid -u $hostuid && \
+    rsync -a /etc/skel/ /home/build/
 
 RUN mkdir /home/build/bin
 RUN curl http://commondatastorage.googleapis.com/git-repo-downloads/repo > /home/build/bin/repo
diff --git a/run.sh b/run.sh
index 6d2ff49..475417f 100755
--- a/run.sh
+++ b/run.sh
@@ -48,7 +48,9 @@ elif [[ $FORCE_BUILD = 1 ]] || ! echo "$IMAGE_EXISTS" | grep -q "$TAG"; then
 	docker pull ubuntu:16.04
 
 	echo "Building Docker image $REPOSITORY:$TAG..."
-	docker build -t $REPOSITORY:$TAG .
+	USERID=$(id -u)
+	GROUPID=$(id -g)
+	docker build -t $REPOSITORY:$TAG --build-arg hostuid=$USERID --build-arg hostgid=$GROUPID .
 	OK=$?
 
 	# After successful build, delete existing containers