#Docker inspect format mount source how to#
#Docker inspect format mount source code#
#Docker inspect format mount source password#
#Docker inspect format mount source series#

#Docker inspect format mount source password#

You’ll likely find it useful in your own projects and in fact we’ll be using it again in Part 9a – Installing a Bitwarden Password Manager. This is a bit of overkill for our purposes here, but it provides a nice example of this capability.

#Docker inspect format mount source code#

While we could simply add this code to our Compose file, let’s use a Compose feature that lets us add or override Compose file configuration at startup with a Compose override file named.

It’s best to follow the typical practice of not altering the core WordPress files so you won’t lose any changes you make if WordPress updates itself. This could result in you losing some changes you’ve made to your WordPress installation if it was altered or damaged such that those files were deleted.

For example, the WordPress image will download the WordPress files when its container starts if certain files are not present. However, the directory’s contents could be changed depending on the image being used. Note that Compose will not alter a mount directory or its contents if it already exists at startup. Thus, the code we need to add to the MariaDB service is volumes: The container directories we’ll bind to here are the same ones we examine in Part 4a in the anonymous volumes, /var/lib/mysql for the MariaDB service and /var/www/html for the WordPress service. Compose will create them for us if they don’t already exist when we start our app. We don’t need to create the directories within our project folder. Let’s use a directory named db for the MariaDB service and one named wp for the WordPress service. Configuring the bind mounts for a service in our Compose file only requires specifying a directory location on our host file system and the container directory, in the host:container format for the service under a volumes sub-topic key. Let’s explore bind mounts further by adding one to the MariaDB and WordPress services in our WordPress app. Use of a bind mount allows us to specify the file system location of the data files, persist our data from session to session, and even access those files when our app is shutdown. Likewise, we can add bind mounts to the MariaDB and WordPress containers to allow common access and persistence to these services’ data files. The purpose in that case was to provide a common file system location where both we and the nginx container could access the nginx configuration file. We’ve already seen the use of bind mounts in Part 3 when we bound our nginx configuration directory to the nginx container’s internal configuration directory. Exploring Bind Mounts with our WordPress App For the remainder of this post we will continue working with our project from Part 4a. If you need an overview of Docker data storage options before we move on you can read Docker’s storage overview.

#Docker inspect format mount source how to#

We’ll also look at how to override or add specifications to our Compose file with a file. In Part 4b, we’ll continue discussing data storage within Docker, focusing on the bind mount option for persistent storage. As we saw in Part 4a however, Docker has managed our data, but has not persisted it from session to session.

#Docker inspect format mount source series#

So far in this tutorial series we haven’t explicitly specified any data storage options for our WordPress app.

Part 9b – Hosting Bitwarden behind a reverse proxy server.

Part 9a – Installing and configuring a Bitwarden password manager.

Part 8 – Hosting multiple WordPress sites on a single database server.

Part 7b – Securing network communications with your own certificate authority.

Part 7a – Creating your own certificate authority.

Part 6 – Securing network communications with self-signed certificates.

Part 5 – Securing passwords with Docker secrets.

Part 2 – Adding a database management tool.

Part 1 – Series introduction and creating a simple WordPress app.

This is Part 4b in a series describing a project to create a local WordPress development environment using Docker-Compose. If you’d just like to dive into the code for adding storage volumes to the WordPress app from the Part 3, you can skip ahead to Part 4d – Working with Data Storage in Docker Compose. We’re continuing our examination of Docker data storage options.