Chapter 1. Welcome to Docker
Figure 1.1. A basic computer stack running two programs that were started from the command line
Figure 1.2. Docker running three containers on a basic Linux computer system
Figure 1.3. Dependency relationships of example program
Figure 1.4. Example programs running inside containers with copies of their dependencies
Figure 1.5. Left: a malicious program with direct access to sensitive resources. Right: a malicious program inside a container.
Figure 1.6. What happens after running docker run
Figure 1.7. Running docker run a second time. Because the image is already installed, Docker can start the new container right away.
Chapter 2. Running software in containers
Figure 2.1. The three containers that you’ll build in this example
Figure 2.2. A fleet of web server containers and related monitoring agents
Figure 2.3. The state transition diagram for Docker containers as reported by the status column
Figure 2.4. Each WordPress and agent container uses the same database and mailer.
Chapter 3. Software installation simplified
Figure 3.1. Flow of topics covered in this chapter
Figure 3.2. Step 1—Software identification
Figure 3.3. Step 2—Locating repositories
Figure 3.4. The steps required to complete the Docker Hub scavenger hunt. Find the mystery repository on Docker Hub. Install the latest image from that repository and run it interactively to get the password.
Figure 3.5. Parts of the pull and save subcommands