npm ci is safer than npm i, and avoid installing serve globally

Dockerfile

@@ -5,8 +5,6 @@ WORKDIR /app
 ADD package.json /app/
 ADD package-lock.json /app/
 COPY . /app/
-RUN npm install && \
-    npm run build
+RUN npm ci && npm run build
 
-RUN npm install -g serve
 ENTRYPOINT ["/app/bin/boot_server_in_docker"]

bin/boot_server_in_docker

@@ -7,31 +7,4 @@ function error_handler() {
 trap 'error_handler ${LINENO} $?' ERR
 set -o errtrace -o errexit -o nounset -o pipefail
 
-# # run migrations
-# export FLASK_APP=/app/src/spiffworkflow_backend
-#
-# if [ "${DOWNGRADE_DB:-}" = "true" ]; then
-#   echo 'Downgrading database...'
-#   poetry run flask db downgrade
-# fi
-#
-# if [ "${UPGRADE_DB:-}" = "true" ]; then
-#   echo 'Upgrading database...'
-#   poetry run flask db upgrade
-# fi
-#
-# port="${PORT0:-}"
-# if [[ -z "$port" ]]; then
-#   port=7000
-# fi
-#
-# additional_args=""
-#
-# if [[ "${APPLICATION_ROOT:-}" != "/" ]]; then
-#   additional_args="${additional_args} -e SCRIPT_NAME=${APPLICATION_ROOT}"
-# fi
-#
-# # THIS MUST BE THE LAST COMMAND!
-# exec poetry run gunicorn ${additional_args} --bind "0.0.0.0:$PORT0" --workers=3 --timeout 90 --log-level debug wsgi:app
-
-exec serve -s build -l "$PORT0"
+exec ./node_modules/.bin/serve -s build -l "$PORT0"