Added Dockerfile & nginx configuration

Dockerfile

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+FROM alpine:3.15.3 AS builder
+
+RUN apk update && \
+    apk add --no-cache \
+        hugo
+
+WORKDIR /app
+
+COPY . ./
+
+# Build the site
+RUN hugo
+
+
+FROM nginx:1.21.6-alpine
+
+COPY nginx/nginx.conf /etc/nginx/nginx.conf
+COPY nginx/default.conf /etc/nginx/conf.d/default.conf
+COPY nginx/*.conf.template /etc/nginx/templates/
+
+COPY --from=builder /app/public /usr/share/nginx/html

nginx/default.conf

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+# vim: ft=nginx
+
+# =====FRONTEND HOSTING=====
+location / {
+    root   /usr/share/nginx/html;
+    index  index.html;
+}
+
+error_page  404              /404.html;
+
+# redirect server error pages to the static page /50x.html
+error_page   500 502 503 504  /50x.html;
+location = /50x.html {
+    root   /usr/share/nginx/html;
+}

nginx/matrix.conf.template

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+# vim: ft=nginx
+
+# =====MATRIX WELL-KNOWN FILES=====
+# Used for server federation
+location = /.well-known/matrix/server {
+    charset utf-8;
+    default_type application/json;
+
+    if ($request_method = 'GET') {
+        add_header Access-Control-Allow-Origin '*';
+        add_header Access-Control-Allow-Methods 'GET, POST, PUT, DELETE, OPTIONS';
+        add_header Access-Control-Allow-Headers 'X-Requested-With, Content-Type, Authorization';
+
+        return 200 '{"m.server":"${MATRIX_SERVER}"}';
+    }
+
+    if ($request_method = 'OPTIONS') {
+        add_header Access-Control-Allow-Origin '*';
+        add_header Access-Control-Allow-Methods 'GET, POST, PUT, DELETE, OPTIONS';
+        add_header Access-Control-Allow-Headers 'X-Requested-With, Content-Type, Authorization';
+        add_header 'Content-Length' 0;
+        return 204;
+    }
+
+    return 405;
+}
+
+location = /.well-known/matrix/client {
+    charset utf-8;
+    default_type application/json;
+
+    if ($request_method = 'GET') {
+        add_header Access-Control-Allow-Origin '*';
+        add_header Access-Control-Allow-Methods 'GET, POST, PUT, DELETE, OPTIONS';
+        add_header Access-Control-Allow-Headers 'X-Requested-With, Content-Type, Authorization';
+
+        return 200 '{"m.homeserver":{"base_url":"${MATRIX_CLIENT_SERVER}"}}';
+    }
+
+    if ($request_method = 'OPTIONS') {
+        add_header Access-Control-Allow-Origin '*';
+        add_header Access-Control-Allow-Methods 'GET, POST, PUT, DELETE, OPTIONS';
+        add_header Access-Control-Allow-Headers 'X-Requested-With, Content-Type, Authorization';
+        add_header 'Content-Length' 0;
+        return 204;
+    }
+
+    return 405;
+}

nginx/nginx.conf

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+user  nginx;
+worker_processes  auto;
+
+error_log  /var/log/nginx/error.log notice;
+pid        /var/run/nginx.pid;
+
+
+events {
+    worker_connections  1024;
+}
+
+
+http {
+    include       /etc/nginx/mime.types;
+    default_type  application/octet-stream;
+
+    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+                      '$status $body_bytes_sent "$http_referer" '
+                      '"$http_user_agent" "$http_x_forwarded_for"';
+
+    access_log  /var/log/nginx/access.log  main;
+
+    sendfile        on;
+
+    keepalive_timeout  65;
+
+    gzip  off;
+
+    server {
+        listen      80;
+        listen [::]:80;
+
+        # This order is important, as the Matrix matches should be evaluated first
+        include /etc/nginx/conf.d/matrix.conf;
+        include /etc/nginx/conf.d/default.conf;
+    }
+}