Update entrypoint.sh to add /docker-entrypoint-initdb.d

Add /docker-entrypoint-initdb.d support like most other images.

This will only run these on init and allows adding scripts that modify the setup just after first init, for example you could use it to modify ca.json and add/change datasource.

docker/entrypoint.sh

@@ -76,6 +76,17 @@ function step_ca_init () {
     echo "🤫 This will only be displayed once."
     shred -u $STEPPATH/provisioner_password
     mv $STEPPATH/password $PWDPATH
+
+    # Run scripts in /docker-entrypoint-initdb.d
+    if [ -d /docker-entrypoint-initdb.d ]; then
+        for f in /docker-entrypoint-initdb.d/*; do
+            case "$f" in
+                *.sh)  echo "$0: running $f"; . "$f" ;;
+                *)     echo "$0: ignoring $f" ;;
+            esac
+            echo
+        done
+    fi
 }
 
 if [ -f /usr/sbin/pcscd ]; then