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dezren39/Dockerfile

Forked from armand1m/Dockerfile
Created Sep 5, 2019
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Yarn cache compatible Dockerfile

Yarn Dockerfile

An yarn cache compatible Dockerfile, for building node.js images faster.

Usage

Clone this gist into your project root, and add it to your source control. Change the image service-name:latest tag to your project name in the Dockerfile and build.sh files. Then, always build your image using the build.sh script.

$ chmod +x ./build.sh
$ ./build.sh
#!/bin/bash
if [ ! -f .yarn-cache.tgz ]; then
echo "+ build: Init empty .yarn-cache.tgz"
tar cvzf .yarn-cache.tgz --files-from /dev/null
fi
docker build -t service-name:latest .
docker run \
--rm \
--entrypoint cat \
service-name:latest \
/tmp/yarn.lock > /tmp/yarn.lock
if ! diff -q yarn.lock /tmp/yarn.lock > /dev/null 2>&1; then
echo "+ build: Saving Yarn cache"
docker run \
--rm \
--entrypoint tar \
service-name:latest \
czf - /root/.yarn-cache/ > .yarn-cache.tgz
echo "+ build: Saving yarn.lock"
cp /tmp/yarn.lock yarn.lock
fi
FROM alpine
RUN apk add --update --no-cache nodejs
RUN npm i -g yarn
ADD package.json yarn.lock /tmp/
ADD .yarn-cache.tgz /
RUN cd /tmp && yarn
RUN mkdir -p /service && cd /service && ln -s /tmp/node_modules
COPY . /service
WORKDIR /service
ENV FORCE_COLOR=1
ENTRYPOINT ["npm"]
CMD ["start"]
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