release: add dockerized nginx deployment

.dockerignore

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+.git
+.gitignore
+landing-page-deploy.zip
+

Dockerfile

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+FROM nginx:1.27-alpine
+
+# Serve the static landing page through Nginx on port 80.
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+COPY . /usr/share/nginx/html
+
+EXPOSE 80
+

nginx.conf

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+server {
+    listen 80;
+    server_name _;
+
+    root /usr/share/nginx/html;
+    index index.html;
+
+    location / {
+        try_files $uri $uri/ =404;
+    }
+}
+