From 2eb74c000b0b1f1957ec9097205d2d7d7a5a515b Mon Sep 17 00:00:00 2001
From: Jannis R <mail@jannisr.de>
Date: Fri, 1 May 2020 20:17:07 +0200
Subject: [PATCH] improve Docker layer caching

---
 Dockerfile | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index d55be7b..75b31c2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,18 +1,22 @@
-FROM node:alpine
-
+FROM node:alpine as builder
 WORKDIR /app
-ADD . /app
 
-RUN apk add --update git bash && \
-	npm install --production && \
-	apk del git && \
-	rm -rf /tmp/* /var/cache/apk/*
+RUN apk add --update git bash
+
+ADD package.json /app
+RUN npm install --production
+
+FROM node:alpine
+WORKDIR /app
 
 EXPOSE 3000
 
 ENV HOSTNAME v5.db.transport.rest
 ENV PORT 3000
 
+COPY --from=builder /app/node_modules ./node_modules
+ADD . /app
+
 RUN npm run build
 
 CMD ["node", "index.js"]