Tag Archives: docker

Setting up gem caching server to speed up docker builds

First up, why do we even need a gem caching server? Once you install a gem it does get cached in your system by default. Method mentioned in this post can be useful if you are using vagrant or docker to do bundle installs a lot of times. For example in my case every time I tried to build my docker image the bundle install command used to take a lot of time because in every build it used to download all the gems again. Continue reading

Link external containers using docker-compose

If you use docker and docker-compose then you might have come across cases where you want services running across different networks to interact. Typically this need arises when we use a single database container like postgres and we want other containers created using different docker-compose files to use the database container. It can become really confusing and difficult to setup. I got stuck recently with a similar issue and resolved it. Hope it might be useful for you as well. Continue reading