fix: docker: interactive passphrases went missing long ago

If those PASSPHRASE_XXX variables are not defined, then the Docker won't
be able to pass them to container:

rooted-ota.sh: line 405: PASSPHRASE_AVB: unbound variable

Just ask for them politely in the case they weren't defined.

Author: xabolcs

rooted-ota.sh

@@ -389,14 +389,18 @@ function patchOTAs() {
         args+=("--patch-arg=--magisk-preinit-device" "--patch-arg" "$MAGISK_PREINIT_DEVICE")
       fi
 
-      # If env vars not set, passphrases will be queried interactively
-      if [ -v PASSPHRASE_AVB ]; then
-        args+=("--pass-avb-env-var" "PASSPHRASE_AVB")
+      # If env vars not set, passphrases will be queried now!
+      if [ ! -v PASSPHRASE_AVB ]; then
+        read -s -p "This is $0, please enter your AVB password! " PASSPHRASE_AVB
+        echo
       fi
+      args+=("--pass-avb-env-var" "PASSPHRASE_AVB")
 
-      if [ -v PASSPHRASE_OTA ]; then
-        args+=("--pass-ota-env-var" "PASSPHRASE_OTA")
+      if [ ! -v PASSPHRASE_OTA ]; then
+        read -s -p "This is $0, please enter your OTA password! " PASSPHRASE_OTA
+        echo
       fi
+      args+=("--pass-ota-env-var" "PASSPHRASE_OTA")
 
       if [[ "${SKIP_MODULES}" != 'true' ]]; then
         args+=("--module-custota" ".tmp/custota.zip")