How to run Docker SchemaSpy on a locally running Postgres

schemaspy-docker-postgres.sh

docker run -v "$PWD/schemaspy_output:/output" schemaspy/schemaspy:latest \
  -t pgsql \
  -host host.docker.internal \
  -port 5432 \
  -db my_database \
  -u my_username \
  -p my_password \
  -vizjs
# -host needs to be host.docker.internal to refer to your local machine's localhost, 
# not the schemaspy container's localhost. Schemaspy's docker documentation for this is horrible.
# -vizjs is optional depending on whether you want to use the graphviz depedency or the embedded viz.js. 
# If you are running schemaspy natively (without docker) I would most certainly recommend using viz.js
# because getting graphviz installed is a $$ PITA. Especially on macOS.