Add files via upload

dockeri.txt

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+# These are all the files and directories that are _not_ included in the docker
+# build. They are not used in the docker build and including them would simply
+# invalidate the layer cache.
+backend-tests
+node_modules
+demos
+docs
+dist
+screenshots
+target
+out
+arg.in
+Dockerfile
+*.wasm
+*.swp
+
+# filter out all "hidden" files and directories
+# (.git, .dfx, .*ignore, etc)
+.*
+
+# except for the ones we really want
+!.node-version
+
+# Scripts are added explicitly as needed
+scripts/
+!scripts/build
+!scripts/bootstrap
+
+# docker build doesn't depend on the docker-compose setup
+docker-test-env/