Add SSH Into A Docker Container as a devops til

README.md

@@ -9,7 +9,7 @@ and pairing with smart people at Hashrocket.
 
 For a steady stream of TILs, [sign up for my newsletter](https://tinyletter.com/jbranchaud).
 
-_951 TILs and counting..._
+_952 TILs and counting..._
 
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@@ -137,6 +137,7 @@ _951 TILs and counting..._
 - [Reload The nginx Configuration](devops/reload-the-nginx-configuration.md)
 - [Resolve The Public IP Of A URL](devops/resolve-the-public-ip-of-a-url.md)
 - [Running Out Of inode Space](devops/running-out-of-inode-space.md)
+- [SSH Into A Docker Container](devops/ssh-into-a-docker-container.md)
 - [SSL Certificates Can Cover Multiple Domains](devops/ssl-certificates-can-cover-multiple-domains.md)
 - [Wipe A Heroku Postgres Database](devops/wipe-a-heroku-postgres-database.md)
 

devops/ssh-into-a-docker-container.md

@@ -0,0 +1,27 @@
+# SSH Into A Docker Container
+
+Before you can SSH into a Docker container, you need to know the name of the
+container.
+
+Run
+
+```bash
+$ docker ps
+```
+
+to list the currently running containers and find the name of the one you want
+to connect to. If you don't see the one you are looking for, it may not be
+running.
+
+Then, you can connect to it by name with a bash session like so:
+
+```bash
+$ docker exec -it <container name> /bin/bash
+```
+
+The
+[`-it`](http://docs.docker.oeynet.com/engine/reference/commandline/container_exec/)
+flags open an interactive emulated terminal connection. `/bin/bash` is the
+command that gets run in that context.
+
+[source](https://phase2.github.io/devtools/common-tasks/ssh-into-a-container/)