Add make target to run tests, clippy, and the auto-formatter locally.

Makefile

@@ -0,0 +1,39 @@
+SHELL := bash
+.ONESHELL:
+.SHELLFLAGS := -eu -o pipefail -c
+.DELETE_ON_ERROR:
+MAKEFLAGS += --warn-undefined-variables
+MAKEFLAGS += --no-builtin-rules
+OS:=$(shell uname -s)
+
+ifeq ($(origin .RECIPEPREFIX), undefined)
+  $(error This Make does not support .RECIPEPREFIX. Please use GNU Make 4.0 or later)
+endif
+.RECIPEPREFIX = >
+
+IMAGE_NAME:=natter
+TARGET :=
+
+.PHONY: help
+help:
+> @grep -h "##" $(MAKEFILE_LIST) | grep -v grep | sed -E 's/^([^:]*): *## */\1:  /'
+
+.PHONY: docker_test
+docker_test: ## Run the rust tests
+> $(MAKE) -C docker/natter_development build
+> docker run --rm -i -t --mount type=tmpfs,destination=/tmp -v "$(shell readlink -f .):/source" --workdir=/source --env CARGO_TARGET_DIR=/target -v "natter-cargo-registry:/usr/local/cargo/registry" natter-development cargo test
+
+.PHONY: docker_clippy
+docker_clippy: ## Run static analysis of the code.
+> $(MAKE) -C docker/natter_development build
+> docker run --rm -i -t --mount type=tmpfs,destination=/tmp -v "$(shell readlink -f .):/source" --workdir=/source --env CARGO_TARGET_DIR=/target -v "natter-cargo-registry:/usr/local/cargo/registry" natter-development cargo clippy --no-deps --all-targets --all-features -- -D warnings
+
+.PHONY: docker_format
+docker_format: ## Auto-format source files.
+> $(MAKE) -C docker/natter_development build
+> docker run --rm -i -t --mount type=tmpfs,destination=/tmp -v "$(shell readlink -f .):/source" --workdir=/source --env CARGO_TARGET_DIR=/target -v "natter-cargo-registry:/usr/local/cargo/registry" natter-development cargo fmt
+> docker run --rm -i -t --mount type=tmpfs,destination=/tmp -v "$(shell readlink -f .):/source" --workdir=/source --env CARGO_TARGET_DIR=/target -v "natter-cargo-registry:/usr/local/cargo/registry" natter-development prettier --write --no-error-on-unmatched-pattern "default_environment/**/*.js" "default_environment/**/*.css"
+
+.PHONY: clean
+clean:
+> $(MAKE) -C docker/natter_development clean

docker/natter_development/Makefile

@@ -21,12 +21,14 @@ help:
 .PHONY: build
 build: ## Build the docker image.
 > docker build --tag $(IMAGE_NAME) --target=$(TARGET) --file Dockerfile .
+> docker volume create natter-cargo-registry
 
 .PHONY: shell
 shell: ## Launch an interactive shell inside the docker image with the source repository mounted at /source.
 shell: build
-> docker run --rm -i -t --entrypoint /bin/sh --mount type=tmpfs,destination=/tmp -v "$$(readlink -f ../../):/source" --workdir=/source $(IMAGE_NAME)
+> docker run --rm -i -t --entrypoint /bin/sh --mount type=tmpfs,destination=/tmp -v "$$(readlink -f ../../):/source" --workdir=/source --env CARGO_TARGET_DIR=/target -v "natter-cargo-registry:/usr/local/cargo/registry" $(IMAGE_NAME)
 
 .PHONY: clean
 clean:
 > docker rmi $(IMAGE_NAME)
+> docker volume rm natter-cargo-registry