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Top 14 Go Dockerfile Projects
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Project mention: Is there a good example of an open source non-trivial (DB connection, authentication, authorization, data validation, tests, etc...) Go API? | reddit.com/r/golang | 2023-01-25
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I know those questions are probably rhetorical, but to answer them anyway:
> > Nice syntax
> Is it though?
The most common alternative is to use a backslash at the end of each line, to create a line continuation. This swallows the newline, so you also need a semicolon. Forgetting the semicolon leads to weird errors. Also, while Docker supports comments interspersed with line continuations, sh doesn't, so if such a command contains comments it can't be copied into sh.
There heredoc syntax doesn't have any of these issues; I think it is infinitely better.
(There is also JSON-style syntax, but it requires all backslashes to be doubled and is less popular.)
*In practice "&&" is normally used rather than ";" in order to stop the build if any command fails (otherwise sh only propagates the exit status of the last command). This is actually a small footgun with the heredoc syntax, because it is tempting to just use a newline (equivalent to a semicolon). The programmer must remember to type "&&" after each command, or use `set -e` at the start of the RUN command, or use `SHELL ["/bin/sh", "-e", "-c"]` at the top of the Dockerfile. Sigh...
> Are the line breaks semantic, or is it all a multiline string?
The line breaks are preserved ("what you see is what you get").
> Is EOF a special end-of-file token
You can choose which token to use (EOF is a common convention, but any token can be used). The text right after the "<<" indicates which token you've chosen, and the heredoc is terminated by the first line that contains just that token.
This allows you to easily create a heredoc containing other heredocs. Can you think of any other quoting syntax that allows that? (Lisp's quote form comes to mind.)
> Where is it documented?
The introduction blog post has already been linked. The reference documentation (https://github.com/moby/buildkit/blob/master/frontend/docker...) mentions but doesn't have a formal specification (unfortunately this is a wider problem for Dockerfiles, see https://supercontainers.github.io/containers-wg/ideas/docker... instead it links to the sh syntax (https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V...), on which the Dockerfile heredoc syntax is based.
(Good luck looking up this syntax if you don't know what it's called. But that's the same for most punctuation-based syntax.)
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SonarQube
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werf
A solution for implementing efficient and consistent software delivery to Kubernetes facilitating best practices.
Project mention: Is there a CD solution that can be (painlessly) fully automated between stages? | reddit.com/r/kubernetes | 2022-09-08I am looking as well for this kind of tool. I just took a look today by exploring the CNCF landscape this tool : https://werf.io/ , I haven't used it, but it seems to take care of painful stuff like automatic versioning for example. (If someone here tried it, I will be happy to listen to your feedbacks)
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https://github.com/P3GLEG/Whaler <-- that should do what you're looking for. It depends on the image having been generated using a standard Dockerfile approach, but that should work for most images.
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Project mention: Automatically Stop containers when not in use. | reddit.com/r/selfhosted | 2022-12-28
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InfluxDB
Build time-series-based applications quickly and at scale.. InfluxDB is the Time Series Platform where developers build real-time applications for analytics, IoT and cloud-native services. Easy to start, it is available in the cloud or on-premises.
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Project mention: Linka-Cloud/D2vm: Build Virtual Machine Image from Dockerfile or Docker Image | news.ycombinator.com | 2022-11-29
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SaaSHub
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
The latest post mention was on 2023-01-26.
Go Dockerfile related posts
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- Why are BuildKit images taking up way more space??
- Lazytainer question
- Best way to start containers that are only needed occasionally (using docker-compose)
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Index
What are some of the best open-source Dockerfile projects in Go? This list will help you:
| Project | Stars | |
|---|---|---|
| 1 | Portainer | 24,326 |
| 2 | buildkit | 6,308 |
| 3 | werf | 3,454 |
| 4 | Habitus | 1,285 |
| 5 | Whaler | 911 |
| 6 | mort | 478 |
| 7 | Lazytainer | 294 |
| 8 | Starter | 261 |
| 9 | images | 153 |
| 10 | Dockerfile-Generator | 138 |
| 11 | buildkit-nix | 101 |
| 12 | d2vm | 55 |
| 13 | golang-dockerfile | 13 |
| 14 | lazykubectl | 3 |
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