From 4fbb994fec3804e57bf6b5f760713ba78f527430 Mon Sep 17 00:00:00 2001
From: "kebler.net" <kebler.net@gmail.com>
Date: Sat, 21 Jan 2023 22:53:03 -0800
Subject: [PATCH] feat: new entrypoint script, calls start script which in turn
 has case statement to be more flexible passing commands or executing a script
 when staring container by default will start a shell can map host user set of
 to be shared directories in the container (via volumes) if HOST_MAP is set

---
 src/common/scripts/container.env   |  2 ++
 src/common/scripts/entrypoint.sh   |  6 ++++++
 src/common/scripts/host-id-map.sh  |  6 ++++++
 src/common/scripts/shell-update.sh |  0
 src/common/scripts/start.sh        | 22 ++++++++++++++++++++++
 5 files changed, 36 insertions(+)
 create mode 100644 src/common/scripts/container.env
 create mode 100755 src/common/scripts/entrypoint.sh
 create mode 100644 src/common/scripts/host-id-map.sh
 create mode 100644 src/common/scripts/shell-update.sh
 create mode 100755 src/common/scripts/start.sh

diff --git a/src/common/scripts/container.env b/src/common/scripts/container.env
new file mode 100644
index 0000000..11e4fce
--- /dev/null
+++ b/src/common/scripts/container.env
@@ -0,0 +1,2 @@
+export SHARED_DIRS="/shell /opt /data"
+export INITIAL_DIR=/opt/scripts
\ No newline at end of file
diff --git a/src/common/scripts/entrypoint.sh b/src/common/scripts/entrypoint.sh
new file mode 100755
index 0000000..4270156
--- /dev/null
+++ b/src/common/scripts/entrypoint.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+export SCRIPTS_DIR="$(dirname $(realpath "${BASH_SOURCE:-$0}"))"
+# echo arguments in entry $@
+# execute the start script in a login shell so that the uci shell will be sourced 
+# see https://stackoverflow.com/a/1711985/4695378 passing $@
+/bin/bash -l -c '${SCRIPTS_DIR}/start.sh $@' $0 "$@"
diff --git a/src/common/scripts/host-id-map.sh b/src/common/scripts/host-id-map.sh
new file mode 100644
index 0000000..739bb93
--- /dev/null
+++ b/src/common/scripts/host-id-map.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+source $SCRIPTS_DIR/container.env
+if [[ $HOST_MAP ]]; then
+  echo changing ownership of $SHARED_DIRS to $HOST_MAP
+  $([[ ! $EUID -eq 0 ]] && echo sudo) chown -R $HOST_MAP $SHARED_DIRS
+fi 
\ No newline at end of file
diff --git a/src/common/scripts/shell-update.sh b/src/common/scripts/shell-update.sh
new file mode 100644
index 0000000..e69de29
diff --git a/src/common/scripts/start.sh b/src/common/scripts/start.sh
new file mode 100755
index 0000000..39f7426
--- /dev/null
+++ b/src/common/scripts/start.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+# echo arguments in start script:  "$@"
+source $SCRIPTS_DIR/container.env
+source $SCRIPTS_DIR/host-id-map.sh 
+case "$1" in
+  shell_update)
+  echo updating shell repos
+  ;;
+  cmd)
+  shift 1
+  "$@"
+  ;;
+  script)
+  shift 1
+  module_load path
+  script=$([[ $(isAbsPath $1) ]] && echo $1 || echo $SCRIPTS_DIR/$1)
+  shift 1
+  /bin/bash $script "$@"
+  ;;
+  *)
+  /bin/bash -c "cd ${INITIAL_DIR:-$HOME}; exec bash -l"
+esac
\ No newline at end of file