error checking context: file XXX not found or excluded by .dockerignore - linux

Question

I have an interesting setup with my project where I have a directory structure like this:
script.sh
scripts/
create-docker-container.sh
...
src/
...
The idea is that you can run any script from the root directory by proxying the commands through the script.sh script which does the following:
#!/bin/bash
FOUND_SCRIPT=`ls scripts | grep ^$1$`;
if [ "$FOUND_SCRIPT" != "$1" ]; then
echo "Could not find script: $1";
echo "Available...";
ls scripts;
exit 1;
fi
TMPFILE=`mktemp tmp.XXXX`
cp ./scripts/$1 "$TMPFILE" && chmod +x "$TMPFILE";
function cleanup {
rm "$TMPFILE";
}
trap cleanup EXIT
trap cleanup SIGINT
shift;
"./$TMPFILE" "$#";
This normally works fine, however my create-docker-container.sh script isn't working anymore, I get the error:
error checking context: file ('/home/circleci/project/tmp.MK8H') not found or excluded by .dockerignore
My dockerignore looks like
tmp.*
I'm not really sure why this script suddenly started failing with the above error. I assume its because the docker script itself is running from tmp.XXX, which at some point is deleted by script.sh, and it then fails for some sort of context switching issue.
I hope someone with more knowledge about docker can help me.
Thanks :)
I have tried modifying the .dockerignore and removing the cleanup step, but neither have worked.
EDIT:
Here is my dockerfile:
WORKDIR /usr/src/app
COPY . /usr/src/app
CMD [ "./script", "run", "${serviceName}"]
And here is the script to deploy the container:
function cleanup {
./script temp-install-restore
}
trap cleanup EXIT
BUNDLE_FILE=$(node -e "console.log(require(\"./services.json\")[\"$1\"].services[0][\"emit-point\"])")/main.js
./script build $1 >/dev/null;
./script temp-install $(cat "$BUNDLE_FILE" | grep -o 'require("[^"]*")')
./script generate-dockerfile $1 | docker build --no-cache -q -f - .