Cache a docker base image for faster Travis builds #Docker #Travis #cache

Dockerfile

FROM zackferrofields/app:base as builder

COPY . .
RUN yarn \
    && yarn build

FROM nginx
COPY nginx/conf.d/ /etc/nginx/conf.d/
COPY nginx/default.d/dashboard.conf /etc/nginx/default.d/
COPY nginx/data/www /var/www/zackferrofields
COPY --from=builder /src/public /var/www/zackferrofields/app/

Dockerfile.base

FROM node:8.11.1-alpine

ENV WORKDIR /src
WORKDIR $WORKDIR

COPY package.json yarn.lock ./

RUN yarn install

travis.yml

language: node_js
node_js: '8'
env:
  global:
    - AWS_REGION=us-west-2
    - IMAGE_NAME=zackferrofields/app
    - IMAGE_BASE_TAG=base
    - NODE_ENV=production
branches:
  only:
    - master
    - develop
    - /^release(\/.*)?$/
services:
  - docker
before_install:
  - pip install --user awscli
  - aws configure set region $AWS_REGION
  - eval $(aws ecr get-login --no-include-email)
install:
  - |
    if git diff --name-only HEAD~1 | egrep -wq 'package.json|Dockerfile.base'; then
      docker build -t $IMAGE_NAME:$IMAGE_BASE_TAG -f Dockerfile.base .
      docker push $IMAGE_NAME:$IMAGE_BASE_TAG
    fi
  - docker build
script: echo "test go here..."
deploy:
  - provider: script
    script: deploy.sh
    skip_cleanup: true
    on:
      all_branches: true