Added Docker image config

.dockerignore

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+# By default, ignore everything
+*
+
+# Blog source
+!archetypes/
+!content/
+!data/
+!layouts/
+!resources/
+!static/
+!themes/
+!config.yaml
+
+# Nginx config file
+!nginx.conf

Dockerfile

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+FROM alpine:latest AS builder
+
+WORKDIR /usr/src/app
+
+# Install Hugo
+RUN apk add --no-cache hugo
+
+# Copy site files for building
+COPY . ./
+
+# Generate the site
+RUN hugo --minify
+
+
+FROM nginx:alpine
+
+COPY nginx.conf /etc/nginx/nginx.conf
+COPY --from=builder /usr/src/app/public /usr/share/nginx/html

nginx.conf

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+worker_processes 1;
+
+events {
+    worker_connections 1024;
+}
+
+http {
+    # https://stackoverflow.com/a/51360290/6483444
+    map $sent_http_content_type $expires {
+        default                    off;
+        text/html                  epoch;
+        text/css                   max;
+        application/javascript     max;
+        ~image/                    max;
+    }
+
+    server {
+        server_name _;
+        listen 80;
+
+        root /usr/share/nginx/html;
+        index index.html;
+        include mime.types;
+        expires $expires;
+    }
+}