"--hostname" can be used to set the hostname for the temporary container
if you want to add records to /etc/hosts you can use the "--etc-hosts-map" flag
there's also "--container-dns" and "--container-dns-search" for the dns related configurations
docker-slim build always fails with any of the Go samples untouched. Fwiw, it also fails with my own container ;-)
info=container status=created name=dockerslimk_51426_20191211150105 id=585c79c09a5481a7967948391876a49f67e251f6ee19e618f72ab0fa6e649f01
docker-slim[build]: info=container status=crashed id=585c79c09a5481a7967948391876a49f67e251f6ee19e618f72ab0fa6e649f01
docker-slim: container stdout:
docker-slim: container stderr:
standard_init_linux.go:211: exec user process caused "exec format error"I'm on OSX (10.13.6 (17G10021)) with Docker 19.03.5.
Any idea?
when i use docker build ,it is ok
but i use docker-slim,request to http://registry.weihong.com.cn/minimist failed, reason: getaddrinfo ENOTFOUND registry.weihong.com.cn registry.weihong.com.cn:80
no found registry.weihong.com.cn
what i can do?
I use --include-path, but it no work
i'm using java, mvn, gradle, node and python beneath oracle linux as a base image, all built in into a one docker image that has around 2 gb of size.. no http-probes and no port exports..
tried to fire docker-slim into that image but it gave around 3 mb image that has a nothing inside.
@jasperamorgan_gitlab has similar issue of the one I have..
my point is how to get the 2gb image smaller and faster with docker-slim.
tried to fire docker-slim into that image but it gave around 3 mb image that has a nothing inside.
@jasperamorgan_gitlab has similar issue of the one I have..
my point is how to get the 2gb image smaller and faster with docker-slim.
Hey everyone. I'm trying to run docker-slim from within docker (using the image from docker hub, dslim/docker-slim), but I'm running into issues: docker-slim can't seem to perform its HTTP probes because the connections are being refused. When running the exact same docker-slim build command on the host, everything works fine. Am I overlooking some crucial flag I should be using when running docker-slim from within docker?
https://gist.github.com/otaconix/397ff08558c098631b73499472bd7391 This gist should contain all that's necessary to reproduce my issue
@delabassee_twitter sorry for the headaches! I wonder where you installed docker-slim on your Mac... What's the directory name? Can you also run
file docker-slim-sensor in that directory to see the system architecture for the sensor executable. Can you also share the output when you run docker-slim version?
@ZhouBox I assume
registry.weihong.com.cn is referenced in your Dockerfile somehow, right? If this is the case it's a gap in functionality right now... The --etc-hosts-map value is only applied at runtime when the image is minified (it's not used when the image is build like it would happen with docker build --add-host. I'll open a Github issue to track this enhancement. Thank you for sharing your use case!
@ZhouBox Can you share the full
docker-slim command line when you are trying to use the --include-path parameter? It'll help reproducing the condition.
@mr.docker_gitlab are you trying to minify a base image or do you have your application (or a set of applications) in that image? What's the purpose/function of that image? Minifying base images with
docker-slim is technically possible, but it requires extra effort and you need to use the --include-* params like --include-path, --include-bin and --include-exe parameters for docker-slim to specify explicitly what you want to keep. There's a future enhancement that will help with minifying base images (ability to minify images specifying multiple command line applications you want to keep). I'll be happy to ping you when it's available and it'll be super if you have cycles to work on this feature if you'd like to see it sooner :)
Hi,
I just downloaded 1.27.0, put binaries (linux) in /usr/bin/ and tried this command and receiving an error:
--> docker-slim build hello_golang
docker-slim[build]: info=http.probe message='using default probe'
docker-slim[build]: state=started
docker-slim[build]: info=params target=hello_golang continue.mode=probe rt.as.user=true keep.perms=true
docker-slim[build]: state=image.inspection.start
time="2020-03-01T19:06:25+01:00" level=fatal msg="docker-slim: failure" error="open /tmp/docker-slim-state/docker-slim-sensor: no such file or directory" stack="goroutine 1 [running]:\nruntime/debug.Stack(0x415436, 0x7f65e1e39b00, 0x100)\n\truntime/debug/stack.go:24 +0x9d\ngithub.com/docker-slim/docker-slim/pkg/util/errutil.FailOn(0xb5b4a0, 0xc00001f050)\n\tgithub.com/docker-slim/docker-slim/pkg/util/errutil/errutil.go:14 +0x54\ngithub.com/docker-slim/docker-slim/pkg/util/fsutil.PrepareImageStateDirs(0x0, 0x0, 0xc0000d0050, 0x47, 0x1, 0x2, 0x2, 0x31, 0x0, 0x0, ...)\n\tgithub.com/docker-slim/docker-slim/pkg/util/fsutil/fsutil.go:730 +0x9df\ngithub.com/docker-slim/docker-slim/internal/app/master/commands.OnBuild(0x9bd501, 0xa74064, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc0000a0000, 0xc0000b9050, ...)\n\tgithub.com/docker-slim/docker-slim/internal/app/master/commands/build.go:199 +0xa83\ngithub.com/docker-slim/docker-slim/internal/app/master.init.0.func6(0xc0000c2160, 0x0, 0xc0000c82f0)\n\tgithub.com/docker-slim/docker-slim/internal/app/master/cli.go:862 +0x1936\ngithub.com/urfave/cli.HandleAction(0x99d1a0, 0xa99000, 0xc0000c2160, 0xc0000c2160, 0x0)\n\tgithub.com/urfave/cli@v1.22.1/app.go:523 +0x11a\ngithub.com/urfave/cli.Command.Run(0xa6ad11, 0x5, 0x0, 0x0, 0xc0001ec560, 0x1, 0x1, 0xa8d5c0, 0x3e, 0x0, ...)\n\tgithub.com/urfave/cli@v1.22.1/command.go:174 +0x56e\ngithub.com/urfave/cli.(*App).Run(0xc000210000, 0xc000106150, 0x3, 0x3, 0x0, 0x0)\n\tgithub.com/urfave/cli@v1.22.1/app.go:276 +0x7ae\ngithub.com/docker-slim/docker-slim/internal/app/master.runCli()\n\tgithub.com/docker-slim/docker-slim/internal/app/master/cli.go:1274 +0x55\ngithub.com/docker-slim/docker-slim/internal/app/master.Run()\n\tgithub.com/docker-slim/docker-slim/internal/app/master/app.go:6 +0x25\nmain.main()\n\tgithub.com/docker-slim/docker-slim/cmd/docker-slim/main.go:8 +0x20\n" version="linux|Transformer|1.27.0|bbc8c5364169f10f69a87dc09968b1b719c4e2bd|2020-02-29_06:51:21AM"Any suggestions, please?
there's a couple of options... one option is to put the binaries in a different non-system bin directory where the main docker-slim app will be able to save its state
another option is to use the global --state-path parameter (e.g., docker-slim --state-path /some/path/where/ds/will/be/allowed/to/write build your_target_image_name )
Hello guys. congrats for the project .it's really cool. i've reduced my imagesize from 200 MB to 36.9 MB. is there any way to integrate docker-slim into the gitlab-ci, so it does not use the docker daemon? Until now i have experimented with gitlab+ kaniko running on kubernetes runners.Thanks.
@iliefa It is possible to use it in Gitlab CI thought it does rely on Docker… Here’s a sample GitlabCI config file: https://gitlab.com/k.q/sandbox/-/blob/master/.gitlab-ci.yml
Dockerless is an interesting option to consider… I have looked at a number of container build tools like Kaniko… Definitely something that will happen in the future
@iliefa your example should looks like this instead:
docker-slim build --http-probe=false --include-path=/usr/local/bin/docker-php-source php:7.3-alpine
@iliefa if you want to exclude a file or a set of files you should use the
--exclude-pattern build command parameters
the
--exclude-pattern flag supports the Glob/Match syntax ( https://golang.org/pkg/path/filepath/#Match ) in Go plus the ** pattern
Hi, currently trying to narrow down the cause of this error:
Reproducible example on this issue, any suggestions or insight welcome! - docker-slim/docker-slim#161
s6-mkfifo: fatal: unable to mkfifo /var/run/s6/services/s6-fdholderd/supervise/control: No such file or directoryReproducible example on this issue, any suggestions or insight welcome! - docker-slim/docker-slim#161
Hello everybody. I am trying to docker-slim one my image created. when i do it and run the container i receive the following error: standard_init_linux.go:211: exec user process caused "no such file or directory"... i run the image like that: "docker run -d -v "/${PWD}/Notebook:/SRC/Notebook" --name "container" -p 8888:8888 --restart always --shm-size 2g user/container.slim" and it works for the not slimmed one. Thank you in advance for your help
1 reply
Hi guys, is there any guidance on how to figure out base image and add that to xray?
@yashbhutwala great to see that you looked at the code :-) there’s actually quite a bit of information related to the base image information when you run the xray command. For example, here’s what I got running docker-slim xray dslimexamples/server-node-hapi-alpine (server-node-haps-alpine is one of the sample app, so you can try it yourself):
Dockerfile for the image starts with: FROM node:6.11.0-alpine
The console output from the xray command has this line:
docker-slim[xray]: info=image.stack index=0 name='node:6.11.0-alpine' id='sha256:b7535c8c7bee13ca6c082141f5416f2f5d9b8bf68a61cb9e6ce82d42773aa40d' instructions=8 message='see report file for details’
Note how the name field value is node:6.11.0-alpine, which matches the FROM instruction value.
The slim.report.json file (that gets generated when the command is done) includes node:6.11.0-alpine, node and 6.11.0-alpine in one of the image_stack sections.
And the auto-generated Dockerfile.fat file has line: # end of image: node:6.11.0-alpine (id: tags: node:6.11.0-alpine)
