Move build to first step and add interactive commands.

docker/troubleshooting.md

@@ -8,10 +8,12 @@ postgresql['log_directory'] = '/var/log/gitlab/postgresql'
 
 # Commands
 
+```bash
+sudo docker build --tag gitlab_image docker/
+
 sudo docker rm -f gitlab
 sudo docker rm -f gitlab_data
 
-sudo docker build --tag gitlab_image docker/
 sudo docker run --name gitlab_data gitlab_image /bin/true
 
 sudo docker run -ti --rm --volumes-from gitlab_data ubuntu apt-get update && sudo apt-get install -y vim && sudo vim /etc/gitlab/gitlab.rb
@@ -23,3 +25,27 @@ sudo docker run -t --rm --volumes-from gitlab_data ubuntu tail -f /var/log/gitla
 sudo docker run -t --rm --volumes-from gitlab_data ubuntu tail -f /var/log/gitlab/postgresql/current
 
 sudo docker run -ti --rm --volumes-from gitlab_data ubuntu /bin/sh
+```
+
+# Interactively
+
+```bash
+# First start a GitLab container without starting GitLab
+# This is almost the same as starting the GitLab container except:
+# - we run interactively (-t -i)
+# - we define TERM=linux because it allows to use arrow keys in vi (!!!)
+# - we choose another startup command (bash)
+sudo docker run -ti -e TERM=linux --name gitlab --publish 8080:80 --publish 2222:22 --volumes-from gitlab_data gitlab_image bash
+
+# Configure GitLab to redirect PostgreSQL logs
+echo "postgresql['log_directory'] = '/var/log/gitlab/postgresql'" >> /etc/gitlab/gitlab.rb
+
+# You can now start GitLab manually from Bash (in the background)
+gitlab-ctl reconfigure > /var/log/gitlab/reconfigure.log & /opt/gitlab/embedded/bin/runsvdir-start &
+
+# And tail the logs (PostgreSQL log may not exist immediately)
+tail -f /var/log/gitlab/reconfigure.log /var/log/gitlab/postgresql/current
+
+# And get the memory
+cat /proc/meminfo
+```