Docker ignore file and directory patterns - excluding everything and explicitly including files and directories needed for a build

.dockerignore

# ------------------------
# Docker Ignore file patterns
# https://docs.docker.com/engine/reference/builder/#dockerignore-file
#
# Ignore all local files when using the COPY command in Dockerfile
# except patterns starting with !
# reducing the amount of time required to copy files
# ------------------------


# ------------------------
# Ignore all files
*


# ------------------------
# Include Clojure code and config 
!deps.edn
!Makefile
!src/
!test/
!test-data/
!resources/