Tests: run benchmarks in container via Docker

docs/performance.md

@@ -46,27 +46,10 @@ The I/O limits of the relevant (de)compression library will generally determine
 
 ## Running the benchmark test
 
-Requires _ImageMagick_, _GraphicsMagick_ and _Mapnik_:
-
-```sh
-brew install imagemagick
-brew install graphicsmagick
-brew install mapnik
-```
-
-```sh
-sudo apt-get install build-essential imagemagick libmagick++-dev graphicsmagick libmapnik-dev
-```
-
-```sh
-sudo yum install ImageMagick-devel ImageMagick-c++-devel GraphicsMagick mapnik-devel
-```
+Requires Docker.
 
 ```sh
 git clone https://github.com/lovell/sharp.git
-cd sharp
-npm install --build-from-source
-cd test/bench
-npm install
-npm test
+cd sharp/test/bench
+./run-with-docker.sh
 ```

test/bench/Dockerfile

@@ -0,0 +1,26 @@
+FROM ubuntu:22.04
+ARG BRANCH=main
+
+# Install basic dependencies
+RUN apt-get -y update && apt-get install -y build-essential curl git
+
+# Install latest Node.js LTS
+RUN curl -fsSL https://deb.nodesource.com/setup_16.x | bash -
+RUN apt-get install -y nodejs
+
+# Install benchmark dependencies
+RUN apt-get install -y imagemagick libmagick++-dev graphicsmagick libmapnik-dev
+
+# Install sharp
+RUN mkdir /tmp/sharp
+RUN cd /tmp && git clone --single-branch --branch $BRANCH https://github.com/lovell/sharp.git
+RUN cd /tmp/sharp && npm install --build-from-source
+
+# Install benchmark test
+RUN cd /tmp/sharp/test/bench && npm install
+
+RUN cat /etc/os-release | grep VERSION=
+RUN node -v
+
+WORKDIR /tmp/sharp/test/bench
+CMD [ "node", "perf" ]

test/bench/package.json

@@ -10,13 +10,13 @@
   "devDependencies": {
     "@squoosh/cli": "0.7.2",
     "@squoosh/lib": "0.4.0",
-    "async": "3.2.3",
+    "async": "3.2.4",
     "benchmark": "2.1.4",
     "gm": "1.23.1",
     "imagemagick": "0.1.3",
     "jimp": "0.16.1",
     "mapnik": "4.5.9",
-    "semver": "7.3.5"
+    "semver": "7.3.7"
   },
   "license": "Apache-2.0",
   "engines": {

test/bench/run-with-docker.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+set -e
+
+if ! type docker >/dev/null; then
+  echo "Please install docker"
+  exit 1
+fi
+
+BRANCH=$(git branch --show-current)
+echo "Running sharp performance tests using $BRANCH branch"
+
+docker build --build-arg "BRANCH=$BRANCH" -t sharp-test-bench .
+docker run --rm -it sharp-test-bench