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Show HN: dockerc – Docker image to static executable "compiler"

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Re: Show HN: dockerc – Docker image to static executable "compiler"

#3

Post by dvfjsdhgfv »

The Reddit screenshot is hilarious. But it reflects my feelings whenever I want to install a product made by many of these self-proclaimed "open source" companies that bend over backwards to make it almost impossible to install the open version (...and often to discover the crucial features are missing anyway).

Re: Show HN: dockerc – Docker image to static executable "compiler"

#4

Post by NilsIRL »

dflock wrote: post #2

Nice idea! How does this actually work? I'm guessing it's wrapping a custom loader + docker + the image into an executable binary - or something like that?

Yep pretty much.

The executables bundle crun (a container runtime)[0], and a fuse implementation of squashfs and overlayfs. Appended to that is a squashfs of the image.

At runtime the squashfs and overlayfs are mounted and the container is started.

[0]: https://github.com/containers/crun

Re: Show HN: dockerc – Docker image to static executable "compiler"

#5

Post by politelemon »

OK that's a cool idea. I did try the example in the README but I get an error right away (Ubuntu 22.04)

-----

$ ./dockerc --image docker://oven/bun --output bun

FATA[0000] Error loading trust policy: open /etc/containers/policy.json: no such file or directory ⨯ open CAS: validate: read oci-layout: invalid image detected Cannot stat source directory "/tmp/dockerc-fbObho/bundle" because No such file or directory error: FileNotFound

-----

Btw does this also solve the last line in the original user's complaints?

Re: Show HN: dockerc – Docker image to static executable "compiler"

#7

Post by OJFord »

dvfjsdhgfv wrote: post #3

The Reddit screenshot is hilarious. But it reflects my feelings whenever I want to install a product made by many of these self-proclaimed "open source" companies that bend over backwards to make it almost impossible to install the open version (...and often to discover the crucial features are missing anyway).

That was Sourceforge really I suppose wasn't it - I enjoy GitHub for the opposite reason really (that I am a 'smelly nerd' and do want code more often than an executable, well actually they said '.exe', and I never want that) but I've definitely come across repos, even maintain one^, where they have that kind of real world leaking in, not really realising GitHub's not for them and then getting frustrated by it or just doing strange things.

(^I'm a collaborator on awesomecv, a latex CV/resume template, and we get a lot of PRs from people trying to edit their own information & experience into the example. I keep meaning to set up a template repo of how to use it properly as a latex class, maybe include rendering in Actions, the way my own use of it is basically, and more strongly point people towards that in the readme, maybe even remove the example. But I've been saying that for years, since before 'template repo' existed in fact.)

Re: Show HN: dockerc – Docker image to static executable "compiler"

#8

Post by frankjr »

dvfjsdhgfv wrote: post #3

The Reddit screenshot is hilarious. But it reflects my feelings whenever I want to install a product made by many of these self-proclaimed "open source" companies that bend over backwards to make it almost impossible to install the open version (...and often to discover the crucial features are missing anyway).

I had to look it up because I couldn't believe it was real but... https://old.reddit.com/r/github/comments/1at9br4/i_am_new_to...

Re: Show HN: dockerc – Docker image to static executable "compiler"

#9

Post by NilsIRL »

politelemon wrote: post #5

OK that's a cool idea. I did try the example in the README but I get an error right away (Ubuntu 22.04) ----- $ ./dockerc --image docker://oven/bun --output bun FATA[0000] Error loading trust policy: open /etc/containers/policy.json: no such file or directory ⨯ open CAS: validate: read oci-layout: invalid image detected Cannot stat source directory "/tmp/dockerc-fbObho/bundle" because No such file or directory error:…

Thanks for the bug report! Just pushed a change that fixes it (and made a new release with the issue fixed: https://github.com/NilsIrl/dockerc/releases/)
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