From 2cd1aa63e70c15640f9007452b3b987eabd9c7b5 Mon Sep 17 00:00:00 2001
From: Alexander Chernov <alekcander@gmail.com>
Date: Fri, 4 Jan 2019 04:27:51 +0000
Subject: [PATCH] Smaller docker image build. (#738)

Better use of multistaging build.
---
 Dockerfile | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index b5714f04..dedffca5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,10 @@
 ARG NODE_IMAGE=node:10.1-alpine
+ARG WORKDIR=/usr/src/app/
 
 FROM ${NODE_IMAGE} as nodebuild
+ARG WORKDIR
 
-WORKDIR /usr/src/app
+WORKDIR $WORKDIR
 
 # Generate node_modules
 COPY package.json ./package.json
@@ -21,10 +23,18 @@ RUN npm run build && \
     npm prune --production
 COPY server ./server
 
+# Now get the clean image without any dependencies and copy compiled app
+FROM ${NODE_IMAGE} as flood
+ARG WORKDIR
+
+WORKDIR $WORKDIR
+
 # Install runtime dependencies.
 RUN apk --no-cache add \
     mediainfo
 
+COPY --from=nodebuild $WORKDIR $WORKDIR
+
 # Hints for consumers of the container.
 EXPOSE 3000
 VOLUME ["/data"]