add dockerfile and readme

Dockerfile

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+FROM ubuntu:22.04
+
+RUN apt-get update && apt-get install -y curl
+RUN curl -fsSL https://deb.nodesource.com/setup_16.x | bash - && apt-get install -y nodejs
+RUN npm install -g playwright && npx playwright install-deps
+RUN useradd -d /home/nodejs -m -s /usr/bin/bash -p `openssl rand -hex 32` nodejs
+RUN mkdir /app && chown nodejs:nodejs /app
+USER nodejs
+RUN npx playwright install
+
+WORKDIR /app
+
+CMD ["node"]

README.md

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+# deblan/playwright
+
+Docker image to run [playwright](https://github.com/microsoft/playwright).
+
+## Installation
+
+```
+docker pull deblan/playwright
+```
+
+## Usage
+
+```
+cd /path/to/project
+docker run docker run -it -v $(pwd):/app --rm deblan/playwright npx playwright test
+```