[Buildroot] [PATCH] configs/docker_x86_*: add build config for docker images

[Roger Knecht]

Buildroot is not only great to build embedded systems but also to create minimal docker images.
Adding a default configuration for docker images makes it easier to use.

How to build a Docker image with Buildroot:
$ make docker_x86_64_defconfig
$ make

Create a Docker image from Buildroot rootfs:
$ docker image import output/images/rootfs.tar buildroot-image:latest

Run Docker container:
$ docker run --rm -it buildroot-image:latest /bin/sh

Signed-off-by: Roger Knecht <rknecht at pm.me>
---
 DEVELOPERS                      | 4 ++++
 configs/docker_x86_64_defconfig | 8 ++++++++
 configs/docker_x86_defconfig    | 9 +++++++++
 3 files changed, 21 insertions(+)
 create mode 100644 configs/docker_x86_64_defconfig
 create mode 100644 configs/docker_x86_defconfig

diff --git a/DEVELOPERS b/DEVELOPERS
index c33959fa45..dc28496654 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -2474,6 +2474,10 @@ F:	package/chocolate-doom/
 F:	package/irssi/
 F:	package/vnstat/

+N:	Roger Knecht <rknecht at pm.me>
+F:	configs/docker_x86_64_defconfig
+F:	configs/docker_x86_defconfig
+
 N:	Romain Naour <romain.naour at gmail.com>
 F:	board/qemu/
 F:	configs/qemu_*
diff --git a/configs/docker_x86_64_defconfig b/configs/docker_x86_64_defconfig
new file mode 100644
index 0000000000..e571e8162a
--- /dev/null
+++ b/configs/docker_x86_64_defconfig
@@ -0,0 +1,8 @@
+# Architecture
+BR2_x86_64=y
+
+# Filesystem
+BR2_TARGET_ROOTFS_TAR=y
+
+# Init
+BR2_INIT_NONE=y
diff --git a/configs/docker_x86_defconfig b/configs/docker_x86_defconfig
new file mode 100644
index 0000000000..33bb25a309
--- /dev/null
+++ b/configs/docker_x86_defconfig
@@ -0,0 +1,9 @@
+# Architecture
+BR2_i386=y
+BR2_x86_i686=y
+
+# Filesystem
+BR2_TARGET_ROOTFS_TAR=y
+
+# Init
+BR2_INIT_NONE=y
--
2.17.1