Tests: run benchmarks in container via Docker

test/bench/Dockerfile

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+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" ]