From 40120667f71e4ad9bae848dc562b4dfb448c3539 Mon Sep 17 00:00:00 2001
From: Tom Alexander <tom@fizz.buzz>
Date: Thu, 21 Dec 2023 20:02:28 -0500
Subject: [PATCH] Add a Dockerfile for building and running natter.

---
 .dockerignore            |  3 +++
 Cargo.toml               |  6 ++++++
 docker/natter/Dockerfile | 13 +++++++++++++
 docker/natter/Makefile   | 32 ++++++++++++++++++++++++++++++++
 4 files changed, 54 insertions(+)
 create mode 100644 .dockerignore
 create mode 100644 docker/natter/Dockerfile
 create mode 100644 docker/natter/Makefile

diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..0343bec
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,3 @@
+**/.git
+target/
+org_test_documents/
diff --git a/Cargo.toml b/Cargo.toml
index e7f395a..9b552d9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -32,3 +32,9 @@ serde_json = "1.0.107"
 tokio = { version = "1.30.0", default-features = false, features = ["rt", "rt-multi-thread", "fs", "io-util"] }
 toml = "0.8.2"
 walkdir = "2.4.0"
+
+# Optimized build for any sort of release.
+[profile.release-lto]
+inherits = "release"
+lto = true
+strip = "symbols"
diff --git a/docker/natter/Dockerfile b/docker/natter/Dockerfile
new file mode 100644
index 0000000..f45caee
--- /dev/null
+++ b/docker/natter/Dockerfile
@@ -0,0 +1,13 @@
+FROM rustlang/rust:nightly-alpine3.17 AS builder
+
+RUN apk add --no-cache musl-dev
+
+RUN mkdir /root/natter
+WORKDIR /root/natter
+COPY . .
+# TODO: Add static build, which currently errors due to proc_macro. RUSTFLAGS="-C target-feature=+crt-static"
+RUN CARGO_TARGET_DIR=/target cargo build --profile release-lto
+
+FROM alpine:3.17 AS runner
+
+COPY --from=builder /target/release-lto/natter /usr/bin/
diff --git a/docker/natter/Makefile b/docker/natter/Makefile
new file mode 100644
index 0000000..115f1bd
--- /dev/null
+++ b/docker/natter/Makefile
@@ -0,0 +1,32 @@
+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: build
+build: ## Build the docker image.
+> docker build --tag $(IMAGE_NAME) --target=$(TARGET) --file Dockerfile ../../
+
+.PHONY: shell
+shell: ## Launch an interactive shell inside the docker image.
+shell: build
+> docker run --rm -i -t --entrypoint /bin/sh --mount type=tmpfs,destination=/tmp $(IMAGE_NAME)
+
+.PHONY: clean
+clean:
+> docker rmi $(IMAGE_NAME)