add Docker file wih drone pipeline

Dockerfile

@@ -0,0 +1,13 @@
+FROM klakegg/hugo:0.91.0-ext-ubuntu as builder
+COPY . /src
+#RUN ls -la
+WORKDIR /src
+#RUN ls -a
+RUN hugo --gc --minify
+
+FROM caddy:2.4.5-alpine
+LABEL maintainer="marco.blessing@googlemail.com"
+COPY --from=builder src/public /usr/share/caddy/
+HEALTHCHECK  --interval=15s --timeout=3s \
+  CMD wget --no-verbose --tries=1 --spider http://localhost:80/ || exit 1
+#RUN ls -la /usr/share/caddy/