How to use Docker with git worktree - docker

I recently started using git worktree and it is awesome. However, I am not sure how to make it work with Docker. Here is my flow:
repo-a has a dockerFile to build a local container.
I create a new worktree like git worktree add branch-a this will create a folder named branch-a with branch branch-a.
I received a PR to review and I need to switch to branch-b. So I go back to my --bare clone repo and I do git worktree add branch-b. and cd into that folder.
My docker container doesn't catch new files because it is still linked to files on branch-a and if I do docker-compose up -d on branch-b, it throws an error saying that The container name "/<name here>" is already in use by container "31344e3448df72e032c42a96d078ea57c11a75023d197e9ab0683e7c773f54e4"
How can I make my docker container to listen to changes on a different folder?
Thanks

Perhaps a simple way to do this is to have a symlink from the directory Docker expects the files to be. And the symlink points to the actual directories of the different branches. You update the symlink each time you need to work on one of the different worktree branches.

Related

how to add existing non-git project to bitbucket

I created a project using angular cli. Project is in directory dw-ng2-app and it has several files generated by angular cli. I want to create a Bitbucket repository for this. My confusion is, when I create a repository in Bitbucket, it gives me 3 options
I create a README and .gitignore file. I cannot use this option as
then when I try to sync the local project with repository, I get
error that there is no common history
I selected option of starting
from scratch. The web page listed the commands I should run to clone
and upload, eg git clone git#bitbucket.org:username/angularcli.git
but this creates a new directory on my local machine named
angularcli which has .git directory. I am not sure if I can use this
option as my project is in different directory and moving it to
angularcli directory might affect it (not sure)
3rd option is to
mention that I have an existing project. Then I am prompted to use
the command git remote add origin
ssh://git#bitbucket.org/username/angularcli.git but that doesn't
work as my current project directory is not a git repository
How can I move the angular cli project to bitbucket? Should I have created the repository first and then created angularcli project in the generated directory?
There are a couple of ways to do this, but the simplest may be to simply make your current project directory, a git repository.
Go to your project directory
cd dw-ng2-app
Initialize git repository
git init .
Add your current project to be tracked
git add --all
Make your initial commit
git commit -m "Initial commit for Angular project"
At that point, you can use the third, "existing project" option within BitBucket.
After you've created a new repo there, you can see its URL and use that to track your new repository with your local one
git remote add origin https://username#your.bitbucket.domain:7999/yourproject/repo.git
git push -u origin master
[Here's a complete writeup from BitBucket if you need.][1]
note - I used git add . originally in my example, and BitBucket recommends git add --all. Either of these will work fine in your case.
[1]: https://confluence.atlassian.com/bitbucketserver/importing-code-from-an-existing-project-776640909.html
If you've created project using angulat-cli then it automatically created project with git initialisation. It also commits initial changes locally.
So you just have to add remote origin and push the content.
-If repository is not initialise as git repository then:
cd dw-ng2-app
git add --all
git commit -m "commit message"
git push -u origin master
-If already initialise with git repository.
First of all go to directory dw-ng2-app : cd dw-ng2-app
add remote to your repository.
git remote add bitbucket https://username#your.bitbucket.domain/yourproject/repo.git
push the changes:
git push -u origin master
here's master is name of branch in which you want to push the content.

Split up Git Repository

I have a git repository that contains two directories:
src: A full Rails app
devbox: Files to build a vagrant machine and provision using an Ansible script
I wish to split these out to two separate repositories so I have one solely containing my app and another containing the vagrant devbox.
This SHOULD allow me to add the app repo as a git submodule inside the devbox one in order to be worked on but at the same time allow Capistrano to grab the source from the app repo without any faffing around to only get a subdirectory of the full combined repository.
Any thoughts about how to go about splitting the current repo up? I'm just a bit unsure where to begin.
move the devbox folder out of the repo.
mv devbox ~/Projects/
move the src folder out of the repo.
mv src ~/Projects
create two empty repos on your github account for both devbox and src
initialize devbox as git repo cd ~/Projects/devbox && git init
Add the git remote. Instructions provided when you created the git repo on github. git add remote ...
Push the repo to github git commit -am'initial commit' && git push origin master
Repeat steps 4-6 for src

How to put a local repo project into gerrit?

I have a local repo project in ~/code folder, and I also have a gerrit in this server machine(assume its ip is 192.168.136.11), how can I move this local repo into gerrit because we want to use the gerrit to review the codes when developers push the new codes.
Move the repo's .git folder to gerrit's git folder
$ mv -r ~/code/.git $GERRIT_HOME/git/
Restart gerrit
$ GERRIT_HOME/bin/gerrit.sh restart
Should be updated now.
Restarting the service might require superuser priveleges.

share git repo between two computers locally

I'm working on an Xcode project and my brother wants to start helping out. I have the .git folder in my Xcode project directory, how can my brother pull / push / commit to / from my computer? Do I have to use OS X server and put the repo inside of there, or is there a simpler way to do this?
One simple option is to enable "remote login" in sharing, which enables ssh, then you can use the ssh protocol to clone the repository. Remote login preferences will tell you:
To log in to this computer remotely, type "ssh username#computer.local".
username#computer.local will be replaced with your username and hostname. In terminal, use:
git clone username#computer.local:[path]
on your brothers computer to clone the repo to him, where [path] is the path to the folder containing the repository. You will need to enter your password, and you will need to enter it in order to copy changes back later with git push or whatever.
You can set up passwordless ssh with private keys, but bear in mind that by doing this you are effectively giving your brother entire control of your computer.
If you want to push code between two non-bare repositores, I recommend having a look at git-annex.
It is usually used for syncing large files between repositories, but it also contains a nifty way of syncing non-bare repositories (pushes go to synced/master branch that is automatically merged).
Basically, if one can write a ls path or ssh [user#]host:path ls command that would list your repository, then you can use the corresponding git clone [[user#]host:]path [optionalNewName] to clone from it.
Also if he (or you) is working on the same local machine, or has access to the local filesystem, one need only point to either the .git directory or the directory containing the .git directory.
To make clone a repository into another directory:
git clone . ~/2015Archive/repositoryB # copy pwd's repository elsewhere
git clone .git ~/2015Archive/repositoryB # same
git clone ~path/path/repositoryA . # clone other repository into pwd
git clone /home/brother/2015/projects/CoolProject ~/WORK/BrosCode
# with ssh from a remote machine
git clone me#brosmachine:/home/brother/projects/CoolProject WORK/BrosLameCode
git clone me#brosmachine:../brother/projects/CoolProject WORK/BrosLameCode
If you change into the target repository and do a git remote -v it will show you an absolute path to the 'origin' from which it was cloned. If it was a local dir, it will be just a plain, absolute path. If it was accessed through ssh, it will be a ssh [user#]host:path identifier.

how do I deploy multiple branches to different directories via git push?

In production, I maintain two sites - beta and release. Each points to a different directory via a soft link (e.g.)
beta_public_html -> /home/scott/myapp/trunk/public
public_html -> /home/scott/myapp/branches/1.2.3/public
I'm a longtime svn user, moving to git. I'm used to deploying via svn update and changing the soft link on a new branch, things are pretty simple.
Now I'm moving to git. I still need to have the two soft links (it's a Rails app using Passenger), though now I want them to point to two different git branches ("beta" and "release", say). And I want to be able to update them via git push (or git pull).
Question Part 1: I'm not sure the best way to do this.
The way I had started to do it was to just deploy to two different remotes, e.g.
git push ssh://scott#x.com/home/scott/myapp-beta beta
git push ssh://scott#x.com/home/scott/myapp-release release
But this doesn't work because push doesn't update the working tree by default.
So I go into the remote directories and run git reset --hard the first time, and it pulls the working tree. But I push again and I can't get the new push to show up - it just stays at the initial one.
(BTW, note that I can't seem to push to "myapp-beta.git" - that fails, I have to push to the directory name. I am worried that this is part of the problem, but I don't know what I did wrong here.)
So, if the answer to Question 1 is that my method is fine, Question Part 2: what's wrong with what I'm actually doing? If there are hooks I should be using, can someone point me to them?
(An answer to Question 1 that says "run these seven manual steps" will not be a terribly useful answer, seeing as svn checkout + ln -s are two steps.)
Thanks. I want to get back to writing code.
The article Git push is worse than worsless has an interesting discussion about a similar issue.
One of its solution and conclusion involves:
a bare repository on the production server
a cloned repository with a hook to pull what has been pushed into the bare one
So in your case,
one bare repo on which you can push beta and release branches
two cloned repo 'beta' and 'release' with a hook to pull their respective branches from the bare repo.
In short: one step: git push. No more link to manage (since the directory no longer represent a branch in Git, unlike SVN)
Regarding the hook part, a post-receive hook in the bare repo could be all what you need
See Git Tip: Auto update working tree via post-receive hook
$ cd bare
$ chmod +x .git/hooks/post-receive
with a post-receive hook like
#!/bin/sh
cd ../../beta
env -i git reset --hard
cd ../../release
env -i git reset --hard
Note:
the post-receive hook starts out with the GIT_DIR environment variable set to the repo/.git folder, so no matter what path you 'cd' into it will always try to run any following git commands there.
Fixing this is simply a matter of unsetting the GIT_DIR.
'env -i' does just that: it ignores the inherited environment completely and uses only the supplied variables and values.
The solution is to push to single repository, which would employ update or post-receive hook.
There are a few separate possibilities to create two checkouts, which can be used in hook (on server). Going from most lightweight:
If you don't need for those two checked out directories (checked out versions) to actually be git repositories, you can simply use git-archive to export two snapshots (two branches)
git archive --format=tar --prefix=public_html/ master | (cd /var/www/html && tar xf -)
git archive --format=tar --prefix=beta_public_html/ devel | (cd /var/www/html && tar xf -)
where 'master' and 'devel' are names of branches that you wanted to have checked out. Note that --format=tar is not strictly speaking needed, as tar format is default for "git archive". You might also want to remove old contents ("rm -rf public_html/" before "tar xf -" in first line, joined with "&&", and similarly for the second line).
Alternate way of exporting files would be to use low-level commands "git read-tree" (which writes tree to index) and "git checkout-index" (which copies files from index to working area).
In this solution the repository you push into can (and should) be bare, i.e. without working directory itself.
Another solution would be for the repository you push into to have two working directories, which can be created using git-new-workdir script from contrib/workdir. Each of those working areas would have be a checkout of appropriate branch of this repository.
Then update or post-receive hook would unset GIT_DIR, go to those working areas (public_html and beta_public_html), and do "git reset --hard" there.
In this solution "checkouts" would have some git-related metainfo in them (in hidden .git directory).
Yet another solution would be to have two (additional) slave repositories. Pushing into main (master) repository would then (via hook) either push into those two slave repositories, where their hooks would do "git reset --hard" or equivalent, or go to those two slave repositories and do a "git pull" from master there.
Those two slave repositories would be non-bare, and can be [directly in] public_html and beta_public_html. In this solution "checkouts" would be full-fledged git repositories itself.
You can improve this setup by having those slave repositories to have "alternates" (alternate object database) to point to master repository (i.e. be cloned with "git clone --shared ..."); without this object database in slaves starts hardlinked to master. This of course is possible only if master and slaves are on the same filesystem.
Note this solution allows for master repository to be on different host than slave repositories. (although I guess this is flexibility you don't need).
Finally you can instead of current setup deploy gitweb or some other git web interface (see InterfacesFrontendsAndTools and Gitweb wiki pages for a partial list), so that your users can browse different versions and different branches of your repository at their leisure.
In gitweb (and I guess also in other git web interface) thanks to path_info URL support you can view files in browser, and follow links correctly (if they are local), see e.g. git.html from 'html' branch of git.git repository at repo.or.cz.
P.S. "git push" does not update working directory in remote repository by default, because if somebody is working in the non-bare repository you push into, such sideways push can be very unexpected and lead to loss of work.
I use a post-receive hook like this to publish my website, because Git does not touch the working directory when doing a push. The remote repository is a non-bare repository, i.e. it has a working directory.
if [ -n $GIT_DIR ]; then
# Current dir is "<reporoot>/.git/", but we need to run reset at "<reporoot>/".
# Clearing GIT_DIR is needed, or reset will fail with "fatal: Not a git repository: '.'"
unset GIT_DIR
cd ..
fi
git reset --hard
(BTW, note that I can't seem to push to "myapp-beta.git" - that fails, I have to push to the directory name. I am worried that this is part of the problem, but I don't know what I did wrong here.)
When creating a bare Git repository (git init --bare) which does not have a working directory, it is a convention to name the directory "something.git". When having a non-bare repository, the repository is actually in the ".git" subdirectory, so the full path is "something/.git". It seems that in either case you can leave out the ".git" part and Git will detect it automatically.
I'm not really opposed to the other solutions, but I think there's a less hack'ish "Git way" to do this. Here's what I would do:
On my server, I'd set up a sort of a centralized repository (to be managed by Gitosis or some such thing).
From the client end, I'd constantly pull from the repository, make changes and push back. Branches are ofcourse, managed automatically.
I'd pull the required branch from Gitosis into public_html/ beta_public_html of the server. I'd keep it in sync with Gitosis periodically using a Cron job. If you don't like the Cron job idea, you could always use some sort of a hook + script as the others have pointed out.

Resources