| #!/bin/sh |
| set -eu |
|
|
| PERSIST_ROOT="${PERSIST_ROOT:-/data}" |
| APP_DATA_DIR="${PERSIST_ROOT}/app-data" |
| PERSIST_CONFIG="${PERSIST_ROOT}/config.json" |
| DEFAULT_CONFIG="/app/config.default.json" |
|
|
| mkdir -p "$APP_DATA_DIR" |
|
|
| if [ ! -f "$PERSIST_CONFIG" ]; then |
| if [ -f "$DEFAULT_CONFIG" ]; then |
| cp "$DEFAULT_CONFIG" "$PERSIST_CONFIG" |
| else |
| printf '{}\n' > "$PERSIST_CONFIG" |
| fi |
| fi |
|
|
| link_path() { |
| target="$1" |
| link="$2" |
|
|
| if [ -L "$link" ]; then |
| current="$(readlink "$link" || true)" |
| if [ "$current" = "$target" ]; then |
| return |
| fi |
| rm "$link" |
| elif [ -e "$link" ]; then |
| backup="${link}.image-default" |
| if [ ! -e "$backup" ]; then |
| mv "$link" "$backup" |
| else |
| rm -rf "$link" |
| fi |
| fi |
|
|
| ln -s "$target" "$link" |
| } |
|
|
| link_path "$APP_DATA_DIR" /app/data |
| link_path "$PERSIST_CONFIG" /app/config.json |
|
|
| exec "$@" |
|
|
