professornemo/openproject-docker repository overview

$ docker run \
   --name openproject \
   -d -p 8080:80 \
   --rm \
   -e OPENPROJECT_SECRET_KEY_BASE=secret \
   -e OPENPROJECT_HOST__NAME=localhost:8080 \
   -e OPENPROJECT_HTTPS=false \
   professornemo/openproject-docker:latest

Running a bash shell inside a container:
 $ docker exec -it openproject bash

Create a virtual volume on the host machine, and mount this volume to the /app folder inside the container:
$ docker run \
   --name openproject \
   -d -p 8080:80 \
   -v ${PWD}:/app \
   --rm \
   -e OPENPROJECT_SECRET_KEY_BASE=secret \
   -e OPENPROJECT_HOST__NAME=localhost:8080 \
   -e OPENPROJECT_HTTPS=false \
   professornemo/openproject-docker:latest