Tesseract/docker script for multiple files

test.sh

#!/bin/bash
docker ps -f name=t4re
TASK_TMP_DIR=TASK_$$_$(date +"%N")
echo "====== TASK $TASK_TMP_DIR started ======"
docker exec -it t4re mkdir \-p ./$TASK_TMP_DIR/
docker cp ./ocr-files/. t4re:/home/work/$TASK_TMP_DIR/
docker exec -it t4re /bin/bash -c "mkdir -p ./$TASK_TMP_DIR/out/; cd ./$TASK_TMP_DIR/out/; for file in *.tif ; do outfilename="${file%.*}" ; tesseract $file $outfilename -l eng --psm 1 --oem 2 txt pdf hocr; done"
mkdir -p ./ocr-files/output/$TASK_TMP_DIR/
docker cp t4re:/home/work/$TASK_TMP_DIR/out/ ./ocr-files/output/$TASK_TMP_DIR/
docker exec -it t4re rm \-r ./$TASK_TMP_DIR/
docker exec -it t4re ls
echo "====== Result files was copied to ./ocr-files/output/$TASK_TMP_DIR/ ======"

# This script https://github.com/tesseract-shadow/tesseract-ocr-re/blob/master/scripts/test.sh enables me to run Tesseract through Docker to OCR a single file (whatever is at `/ocr-files/phototest.tif`).
# I need a script that lets me run this against multiple files.
# Thanks to Ben https://twitter.com/antinomy/status/879444295136292864 and Ben https://twitter.com/benosteen/status/879378121677524992 I've adapted the above script and got as far as the above.
# All have done is amend line 6 to change the files copies and everything from `for file in` on line 7.
# I get the traceback:
# ====== TASK TASK_15811_261629617 started ======
# Tesseract Open Source OCR Engine v4.00.00alpha with Leptonica
# Error in fopenReadStream: file not found
# Error in findFileFormat: image file not found
# Error during processing.
# ====== Result files was copied to ./ocr-files/output/TASK_15811_261629617/ ======

# I have also tried - with the same results - the slightly different:

#!/bin/bash
docker ps -f name=t4re
TASK_TMP_DIR=TASK_$$_$(date +"%N")
echo "====== TASK $TASK_TMP_DIR started ======"
docker exec -it t4re mkdir \-p ./$TASK_TMP_DIR/
docker cp ./ocr-files/. t4re:/home/work/$TASK_TMP_DIR/
docker exec -it t4re /bin/bash -c "mkdir -p ./$TASK_TMP_DIR/out/; cd ./$TASK_TMP_DIR/out/; for file in *.tif ; do tesseract $file outfilename="${file%.*}" -l eng --psm 1 --oem 2 txt pdf hocr; done"
mkdir -p ./ocr-files/output/$TASK_TMP_DIR/
docker cp t4re:/home/work/$TASK_TMP_DIR/out/ ./ocr-files/output/$TASK_TMP_DIR/
docker exec -it t4re rm \-r ./$TASK_TMP_DIR/
docker exec -it t4re ls
echo "====== Result files was copied to ./ocr-files/output/$TASK_TMP_DIR/ ======"