Added customization directory, updated build instructions.

.gitignore

@@ -1 +1,3 @@
 /output
+/customizations/users.table
+/customizations/overlay/

README.md

@@ -1,2 +1,19 @@
-SystemAgent - Base system port
+# SystemAgent - Base system port
+
 This is the project for SystemAgent compatible SBCs.
+
+## How to build the same image
+
+* Clone buildroot repository.
+* Set `BUILDROOT_PATH` environment variable accordingly.
+* Run `buildroot_make.sh xxxx_defconfig` (see `configs`).
+* Run `buildroot_make.sh nconfig` to make your changes.
+* Run `buildroot_make.sh` to start your runs.
+
+## Necessary modifications
+### Add new users
+Edit users.table in `customizations` directory.
+
+### Copy whatever you want into the filesystem
+Add them to the `customizations/overlay` directory, if the directory does not exist, create it.
+

configs/orangepi_pc_system_agent_defconfig

@@ -20,6 +20,8 @@ BR2_SYSTEM_BIN_SH_BASH=y
 BR2_SYSTEM_DEFAULT_PATH="/bin:/sbin:/usr/bin:/usr/sbin"
 BR2_GENERATE_LOCALE="en_US.UTF-8"
 BR2_TARGET_LOCALTIME="Asia/Tokyo"
+BR2_ROOTFS_USERS_TABLES="$(BR2_EXTERNAL_system_agent_PATH)/customizations/users.table"
+BR2_ROOTFS_OVERLAY="$(BR2_EXTERNAL_system_agent_PATH)/customizations/overlay"
 BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
 BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/iminc/orangepi-pc-system-agent/genimage.cfg"
 BR2_LINUX_KERNEL=y
@@ -46,6 +48,7 @@ BR2_PACKAGE_NETWORK_MANAGER_TUI=y
 BR2_PACKAGE_NETWORK_MANAGER_MODEM_MANAGER=y
 BR2_PACKAGE_OPENSSH=y
 BR2_PACKAGE_BASH_COMPLETION=y
+BR2_PACKAGE_SUDO=y
 BR2_PACKAGE_VIM=y
 BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y

customizations/users.table.example

@@ -0,0 +1 @@
+# See https://buildroot.org/downloads/manual/manual.html#makeuser-syntax for documentation.

external.desc

@@ -1,3 +1,3 @@
-name: orangepi_pc_system_agent
-desc: System Agent port for OrangePi PC
+name: system_agent
+desc: System Agent base system