added node (npm) option

.gitattributes

@@ -0,0 +1,3 @@
+*.Dockerfile linguist-vendored
+*/Dockerfile linguist-vendored
+*.docker-compose.yml linguist-vendored

Dockerfiles/node (npm)/Dockerfile

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+FROM mhart/alpine-node:14
+
+RUN apk add curl
+
+COPY [".", "/usr/src"]
+
+WORKDIR "/usr/src"
+
+RUN npm install
+
+ARG NODE_ENV
+
+CMD if [ "$NODE_ENV" = "develop" ] ; then npm run dev ; else npm run start ; fi

Dockerfiles/node (yarn)/docker-compose.yml

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+version: "2.9"
+
+services:
+   app:
+      build: .
+      volumes:
+        - .:/usr/src
+        - /usr/src/node_modules
+      environment:
+        NODE_ENV: ${NODE_ENV}