#376 use multi-stage Docker build

Dockerfile

@@ -1,9 +1,17 @@
-FROM php:7.3.8-cli
+FROM composer AS composer
 WORKDIR /app
-RUN apt-get update \
-    && apt-get install -y libzip-dev wget git-core python3 python3-pip \
-    && docker-php-ext-install zip \
-    && pip3 install Sphinx sphinx_rtd_theme
 ADD . /app
-RUN cd /app && make cs test html
-CMD [ "php", "-S", "0.0.0.0:80", "-t", "_build/html" ]
+RUN composer install \
+    && ./vendor/bin/phpcs . \
+    && ./vendor/bin/phpunit
+
+FROM python AS sphinx_build
+WORKDIR /app
+COPY --from=composer /app /app
+RUN pip3 install Sphinx sphinx_rtd_theme
+RUN make html
+
+FROM nginx
+WORKDIR /usr/share/nginx/html
+COPY --from=sphinx_build /app/_build/html /usr/share/nginx/html
+RUN rm index.html && mv README.html index.html

Makefile

@@ -190,14 +190,3 @@ pseudoxml:
 	$(SPHINXBUILD) -b pseudoxml $(ALLSPHINXOPTS) $(BUILDDIR)/pseudoxml
 	@echo
 	@echo "Build finished. The pseudo-XML files are in $(BUILDDIR)/pseudoxml."
-
-install: vendor
-
-vendor:
-	composer install
-
-cs: install
-	./vendor/bin/phpcs .
-
-test: install
-	./vendor/bin/phpunit

docker-compose.yml

@@ -1,7 +1,7 @@
 version: "3.1"
 services:
-  php:
-    build: 
+  nginx:
+    build:
       context: .
       dockerfile: Dockerfile
     ports: