Update entrypoint.sh

entrypoint.sh

@@ -1,4 +1,49 @@
-#!/bin/bash
+#!/bin/sh
+# vim:sw=4:ts=4:et
+
+set -e
+
+entrypoint_log() {
+    if [ -z "${NGINX_ENTRYPOINT_QUIET_LOGS:-}" ]; then
+        echo "$@"
+    fi
+}
+
+if [ "$1" = "nginx" ] || [ "$1" = "nginx-debug" ]; then
+    if /usr/bin/find "/docker-entrypoint.d/" -mindepth 1 -maxdepth 1 -type f -print -quit 2>/dev/null | read v; then
+        entrypoint_log "$0: /docker-entrypoint.d/ is not empty, will attempt to perform configuration"
+
+        entrypoint_log "$0: Looking for shell scripts in /docker-entrypoint.d/"
+        find "/docker-entrypoint.d/" -follow -type f -print | sort -V | while read -r f; do
+            case "$f" in
+                *.envsh)
+                    if [ -x "$f" ]; then
+                        entrypoint_log "$0: Sourcing $f";
+                        . "$f"
+                    else
+                        # warn on shell scripts without exec bit
+                        entrypoint_log "$0: Ignoring $f, not executable";
+                    fi
+                    ;;
+                *.sh)
+                    if [ -x "$f" ]; then
+                        entrypoint_log "$0: Launching $f";
+                        "$f"
+                    else
+                        # warn on shell scripts without exec bit
+                        entrypoint_log "$0: Ignoring $f, not executable";
+                    fi
+                    ;;
+                *) entrypoint_log "$0: Ignoring $f";;
+            esac
+        done
+
+        entrypoint_log "$0: Configuration complete; ready for start up"
+    else
+        entrypoint_log "$0: No files found in /docker-entrypoint.d/, skipping configuration"
+    fi
+fi
+
 # Check if the folder /extra exists, if so, copy all files from /extra to /usr/share/nginx/html
 if [ -d "/extra" ]; then
     echo "Copying files from /extra to /usr/share/nginx/html"