feat: add universal image

images/universal/README.md

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+# Example Universal Image
+
+[![Docker Pulls](https://img.shields.io/docker/pulls/codercom/example-universal?label=codercom%2Fexample-universal)](https://hub.docker.com/r/codercom/example-universal)
+
+## Description
+
+Microsoft's [Universal Dev Container Image](https://github.com/devcontainers/images/tree/main/src/universal) extended with a `coder` user.

images/universal/first-run-notice.txt

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+Welcome to Coder! This environment is based on Microsoft's Dev Container Universal image
+with a suite of common tools and languages (Python, Java, Node.js, Go, Rust, etc.)
+
+➡️ https://github.com/devcontainers/images/tree/main/src/universal
+
+To use another image, modify your devcontainer.json or your Coder Template.
+

images/universal/ubuntu.Dockerfile

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+FROM mcr.microsoft.com/devcontainers/universal:linux
+
+USER root
+
+COPY first-run-notice.txt /usr/local/etc/vscode-dev-containers/
+
+# Remove Conda to avoid any license issues
+RUN rm -R /opt/conda && \
+    rm /usr/local/etc/vscode-dev-containers/conda-notice.txt
+
+# Install Chrome for AI Browser Testing
+RUN yes | npx playwright install chrome
+
+# Create `coder` user
+RUN userdel -r codespace && \
+    useradd coder \
+    --create-home \
+    --shell=/bin/bash \
+    --groups=docker \
+    --uid=1000 \
+    --user-group && \
+echo "coder ALL=(ALL) NOPASSWD:ALL" >>/etc/sudoers.d/nopasswd
+
+USER coder