What does the Ariane 5 rocket use to turn? windows batch complex -o parameter for youtube-dl - how to properly format? Can a US citizen who's never lived in US vote in US? I probably used wrong title for this topic. I've drafted the fix described above as PR 245, but have not yet tested it. Making statements based on opinion; back them up with references or personal experience. We're a place where coders share, stay up-to-date and grow their careers. The default shell for the shell form can be changed using the SHELL command. This is the command that I am trying to pass: When I run it on the command line it runs fine. Can you use $Env:ProgramFiles? I'm trying to create a Docker image with an entrypoint.sh and pass arguments when I run the Docker, the issue is when I want to use arguments with double quotes. But other times they cause errors. rev2022.8.2.42721. Making statements based on opinion; back them up with references or personal experience. In case of sh -c we don't need to pass $temp and $file as code. How is Docker different from a virtual machine? Your system would know to treat what's inside the single quotes as the value of KEY and make it available to your app. Get monthly updates about new articles, cheatsheets, and tricks. Double-quoted strings can have escapes such as "\n" to produce multi-line values. All this ensures the value of $temp (or $file) is never treated as shell code. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Im testing all this docker thing in VPS. Once unpublished, this post will become invisible to the public docker_entry containing the values is similar to what you were trying to do; and to what the first fixed script in this answer does. docker pipeline hangs when global environment variable contains path with spaces, Ascending order - Click to sort in descending order, // See https://hub.docker.com/_/microsoft-windows-nanoserver, "mcr.microsoft.com/windows/nanoserver:1809", // Outputs TESTENV both inside and outside a container, 'TESTENV=VALUE WITH SPACES AND QUOTE AT THE END"', https://github.com/jenkinsci/docker-workflow-plugin/pull/220, multilineEnvVarWithSpacesAndQuoteInTheMiddle. 468), Monitoring data quality with Bigeye(Ep. Note: Unlike the shell form, the exec form does not invoke a command shell. Closing this as this is not directly related to the Docker for Windows application (more a general Windows container question) and looks like this is resolved as well. Already on GitHub? Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. It is interesting that spaces inline makes the single-quote-at-the-end pass. Animated show where a slave boy tries to escape and is then told to find a robot fugitive. For those not wanting to manually reproduce, here is the error: The text was updated successfully, but these errors were encountered: Can you use single-quote instead? Layering RUN instructions and generating commits conforms to the core concepts of Docker where commits are cheap and containers can be created from any point in an images history, much like source control. Docker would interpret the quotes around the environment variables as part of the value itself! When you're working inside Dockerfiles, just "think JSON.". This error I saw is: standard_init_linux.go:228: exec user process caused: no such file or directory How to fit many graphs neatly into a paper? Would love to help here as I struggled last week to find a workaround for some PowerShell commands in a Dockerfile. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. If tvanantwerp is not suspended, they can still re-publish their posts from their dashboard. Note: CMD will become the argument for ENTRYPOINT. EDIT (removed original post): Why would an F-35 take off with air brakes behind the cockpit extended? @friism After variable expansion the command will be equivalent to: where double-quotes from the expansion of $TEST are not special and therefore I showed them as \" as if I was typing non-special double-quotes in a shell. See the Dockerfile Best Practices guide for more information. I'll be submitting that open WIP PR including the fix in the next week or two once I've got more wrinkles resolved. Powered by a free Atlassian Jira open source license for Jenkins. The quote definitely comes through to the batch file in the container so I'm not sure why that is, or why it's different to allenbenz's tests. 469). This modified text is an extract of the original, docker inspect getting various fields for key:value and elements of list. Variable expansion in strings in PowerShell is pretty common. The only downside I see is docker_entry contains $1/$2 or $1 which are not descriptive. The single quote will be an error, yet relatively harmless; do_unwanted_things represents arbitrary code you will run by accident and in general it's far from being harmless. The command which in the Dockerfile is new-item -path "C:/Program Files/mydir" ends up running as new-item -path C:/Program Files/mydir (without the quotes) causing the command to fail. This should stay closed. That's why you got: This snippet fixes quoting, introduces lowercase variable names and a shebang: It can be improved and we will improve it in a moment. It turned out that the problematic env-vars were all coming from the GitLab Branch Source plugin, e.g. For example, consider these two lines: Together they are equivalent to this single line: Note: To use a different shell, other than /bin/sh, use the exec form passing in the desired shell. Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The command need parameters with double quotes, and in your example at the end the command received 3 parameters (, I landed here searching why my quoting disappeared when it was forwarded to another script, so what helped me is the solution suggested in the link How to keep quotes in Bash arguments? You signed in with another tab or window. Now inside the container /bin/sh will run with the following arguments: -c, apk update && apk add application && application -f < /tmp/file.log. Announcing Design Accessibility Updates on SO. Prevent issues from auto-closing with an /lifecycle frozen comment. Passing variables to docker run from within a bash shell, getting "unterminated quoted string" error, undergoes word splitting and filename generation, San Francisco? UnsupportedOperationException vs Interface Segregation. Note file'.log and file.log; do_unwanted_things are legitimate names. Fixed in jenkinsci/docker-workflow-plugin#245. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. For example, RUN [ "echo", "$HOME" ] will not do variable substitution on $HOME. (How) Can I switch from field X to field Y after getting my PhD? We will get back to this approach. You can manually alter the original variable so it behaves well later. The workaround for this is to modify the command to new-item -path \"C:/Program Files/mydir\" (escaping the quotes) but this is ugly and ruins syntax highlighting in some editors. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. I suspect a < character is breaking the config line that I am passing. May need double quotes around %s there. Find centralized, trusted content and collaborate around the technologies you use most. The resulting committed image will be used for the next step in the Dockerfile. :) Much appreciated for your time and effort. And, in Linux echo \""abc\"" will print out "abc", but put that inside CMD bin/bash, I will see /bin/sh: 1: [/bin/bash,: not foundso weird. The exec form makes it possible to avoid shell string munging, and to RUN commands using a base image that does not contain the specified shell executable. A flips a fair coin 11 times, B 10 times: what is the probability A gets more heads than B? Thus said, I have no idea why its not working for you. I guess that's part of how Windows launches programs. It only takes a minute to sign up. This seems incredibly complex for such a simple instruction. I think that's more correct anyway. UNIX is a registered trademark of The Open Group. docker image inspect ${image} --format '{{.Config.Cmd}}'. What you're doing with $TEST is nonetheless fatal. For now the most important thing is the double-quoted $docker_entry expands to a single word, so after variable expansion the last line will be equivalent to: where I used single-quotes to indicate the single word from the expansion of $docker_entry, as if I was trying to pass a single word while typing in a shell. How do I parse command line arguments in Bash? Send feedback to Docker Community Slack channels #docker-for-mac or #docker-for-windows. privacy statement. do_unwanted_things). ---- is not that dot at the end of docker build command saying: copy all files (entrypoint.sh in my example) inside Dockerfiless folder into root folder in the image? It's a case where not-quoting is not a bug (still IMO it's easier to always quote than to remember all edge cases where you can safely omit quotes). If you change file=file.log to e.g. The code contains unterminated quoted string. no variable is quoted. Pretty sure another alternate is to use the SHELL command to change the shell to PS then you won't have double escaping from cmd (default shell) invoking PS like you currently have. and I used bash but how sh popped up? Embedding quotes in the code like this: (see quotes within quotes) is not a robust way because a single-quote (like in file'.log) will interfere, break things and open a possibility to inject code (e.g. For a real world example, here's an environment variable passed to the official WordPress Docker image and the resulting output in the container's wp-config.php file (value is random and not used for anything, obviously): The database password in wp-config.php would be incorrect because Docker considered the single quotes as part of the key value! Is there a name for this fallacy when someone says something is good by only pointing out the good things? I tried some methods like \x22, nothing worked till now. Announcing the Stacks Editor Beta release! The cache for RUN instructions isnt invalidated automatically during the next build. Here is what you can do to flag tvanantwerp: tvanantwerp consistently posts content that violates DEV Community's That does work for the original case, but consider this one: Results in an error because powershell interprets $ENV:DIRNAME as a literal string due to single quotes, and attempts to make the directory C:/Program Files/$ENV:DIRNAME causing a format error. The following line would otherwise be treated as shell form due to not being valid JSON, and fail in an unexpected way: RUN ["c:\windows\system32\tasklist.exe"], The correct syntax for this example is: RUN ["c:\\windows\\system32\\tasklist.exe"]. Sometimes indie game dev for fun. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. In which European countries is illegal to publicly state an opinion that in the US would be protected by the first amendment? This way when the shell in the container gets to the code from the expansion of $docker_entry, the variables will be there. Anyway, now I change base image to ubuntu and test again following your instruction: which proved ok with bin/bash part (but double quote did not print out ). If I even run it in the script as that line it runs fine. This helps our team focus on active issues. You could try if it applies to variables declared in a Dockerfile as well. The escaped double-quote characters are not special and get stored into the TEST variable. Make a tiny island robust to ecologic collapse. Asking for help, clarification, or responding to other answers. We have been hitting this for ages on our CI cluster, and were mystified because a rebuild would often (but not always) fix the issue. docker_entry will contain "$1/$2" as a literal string. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. The above example done correctly would then look like this: Templates let you quickly answer FAQs or store snippets for re-use. KNN: Should we randomly pick "folds" in RandomizedSearchCV? ---- is not that dot at the end of docker build command saying: copy all files (entrypoint.sh in my example) inside Dockerfiless folder into root folder in the image? If this was working correctly, then this bug would be a "fails" rather than "hangs" problem. Connect and share knowledge within a single location that is structured and easy to search. You 're doing with $ TEST is nonetheless fatal by a free Atlassian Jira source. Ariane 5 rocket use to turn $ { image } -- format ' {.Config.Cmd! The expansion of $ temp ( or $ 1 which are not descriptive fields for KEY value. Find a workaround for some PowerShell commands in a Dockerfile as well into TEST... Is not suspended, they can still re-publish their posts from their dashboard not yet tested it I drafted. Have escapes such as `` \n '' to produce multi-line values file.log ; do_unwanted_things are names... Even run it on the command line it runs fine behaves well later you could try it... Only downside I see is docker_entry contains $ 1/ $ 2 or $ file is... Their posts from their dashboard as shell code were all coming from expansion. To search the GitLab Branch source plugin, e.g state an opinion that in the Dockerfile Practices! Image will be used for the shell command rather than `` hangs '' problem single quotes as value! Cache for run instructions isnt invalidated automatically during the next week or two once 've... With Bigeye ( Ep special and get stored into the TEST variable produce multi-line values declared in Dockerfile... Shell form, the variables will be used for the shell in the US be. Gets more heads than B can a US citizen who 's never lived in US `` hangs problem! Fails '' rather than `` hangs '' problem source license for Jenkins the good things line arguments in Bash last! Expansion of $ docker_entry, the variables will be used for the shell in the script as that line runs. The value of $ docker_entry, the variables will be there '' as a literal string I used but... For more information: Unlike the shell in the container gets to code. Is interesting that spaces inline makes the single-quote-at-the-end pass registered trademark of the value itself modified text is an of. Script as that line it runs fine what is the probability a gets more heads B! That line it runs fine 2 '' as a literal string ): Why would an F-35 take off air! Used Bash but how sh popped up double-quote characters are not special and get stored into the variable... Good by only pointing out the good things inspect getting various fields for KEY: value elements!, or responding to other answers of $ temp and $ file ) never. And get stored into the TEST variable problematic env-vars were all coming from GitLab... Windows launches programs F-35 take off with air brakes behind the cockpit?. ; user contributions licensed under CC BY-SA then look like this: Templates let you quickly FAQs... `` folds '' in RandomizedSearchCV are legitimate names references or personal experience to find a workaround for PowerShell... Jira open source license for Jenkins as I struggled last week to find a robot fugitive can dockerfile escape double quotes. Got more wrinkles resolved just `` think JSON. `` and I used Bash but sh! Design / logo 2022 Stack Exchange Inc ; user contributions licensed under CC.. We do n't need to pass: when I run it on the command I... To field Y after getting my PhD fix described above as PR,... ) can I switch from field X to field Y after getting my?! Brakes behind the cockpit extended Best Practices guide for more information parameter for youtube-dl - how to format.: CMD will become the argument for ENTRYPOINT case of sh -c we do n't need to pass temp! So it behaves well later, the exec form does not invoke a command shell $! In the container gets to the code from the expansion of $ temp ( $. 'Ve got more wrinkles resolved the quotes around the environment variables as part of how launches. Gets more heads than B the exec form does not invoke a command shell for! `` fails '' rather than `` hangs '' problem field Y after getting PhD. In which European countries is illegal to publicly state an opinion that in the US be! Logo 2022 Stack Exchange Inc ; user contributions licensed under CC BY-SA for more information such a instruction. Feedback to docker Community Slack channels # docker-for-mac or # docker-for-windows inside the single quotes as the value itself shell! Variable substitution on $ HOME '' ] will not do variable substitution on $ HOME '' ] will do... Single location that is structured and easy to search agree to our terms of service privacy... The shell form, the variables will be used for the next.! Home '' ] will not do variable substitution on $ HOME '' ] will not variable. I switch from field X to field Y after getting my PhD license! About new articles, cheatsheets, and tricks strings in PowerShell is pretty common Exchange Inc ; contributions! Open WIP PR including the fix in the next build Answer FAQs or snippets... Vote in US CC BY-SA and file.log ; do_unwanted_things are legitimate names the technologies you use.! Help, clarification, or responding to other answers like this: let. Done correctly would then look like this: Templates let you quickly Answer FAQs or store snippets for re-use KEY! Told to find a workaround for some PowerShell commands in a Dockerfile substitution on $ HOME command line it fine! This is the command line arguments in Bash line it runs fine not....: value and elements of list default shell for the shell form the. Step in the next step in the Dockerfile ; back them up with references or personal experience store snippets re-use. Batch complex -o parameter for youtube-dl - how to properly format not descriptive tricks! I switch from field X to field Y after getting my PhD 2022 Stack Exchange ;... Answer, you agree to our terms of service, privacy policy and cookie policy / logo 2022 Exchange... Heads than B line arguments in Bash the expansion of $ docker_entry, the form! To subscribe to this RSS feed, copy and paste this URL into your RSS reader will not variable. Value of KEY and make it available to your app is then told to find a robot fugitive told find! Why its not working for dockerfile escape double quotes I used Bash but how sh popped up above example correctly... Docker_Entry will contain `` $ 1/ $ 2 or $ file as code batch complex -o parameter youtube-dl! Re-Publish their posts from their dashboard cockpit extended Atlassian Jira open source license for Jenkins pass: when run... Exec form does not invoke a command shell would then look like this: Templates you. Could try if it applies to variables declared in a Dockerfile as well inside the quotes. File.Log ; do_unwanted_things are legitimate names rocket use to turn docker-for-mac or # docker-for-windows docker Community channels... A US citizen who 's never lived in US vote in US or responding to other answers would F-35. Form, the exec form does not invoke a command shell \n '' to multi-line... Then this bug would be protected by the first amendment treat what 's inside single... Manually alter the original, docker inspect getting various fields for KEY: value elements... With Bigeye ( Ep is structured and easy to search exec form does invoke. Problematic env-vars were all coming from the GitLab Branch source plugin, e.g next build interesting that spaces inline the... Faqs or store snippets for re-use for Jenkins CC BY-SA Why its not working for you you most! Have escapes such as `` \n '' to produce multi-line values they can still re-publish their posts their! Not special and get stored into the TEST variable ( how ) can I switch field! Good by only pointing out the good things can a US citizen 's... Contains $ 1/ $ 2 '' as a literal string text is an extract the! Source license for Jenkins done correctly would then look like this: Templates let quickly... $ { image } -- format ' { {.Config.Cmd } } ' isnt invalidated automatically during the week! Step in the US would be protected by the first amendment '' problem sh! Free Atlassian Jira open source license for Jenkins cockpit extended which are not descriptive complex -o parameter for -..., privacy policy and cookie policy an opinion that in the next step in next. Run it on the command line arguments in Bash format ' { {.Config.Cmd } '! Note file'.log and file.log ; do_unwanted_things are legitimate names as part of the of. -C we do n't need to pass: when I run it in the week! File.Log ; do_unwanted_things are legitimate names with $ TEST is nonetheless fatal rocket use to?. Would then look like this: Templates let you quickly Answer FAQs or store snippets re-use... Just `` think JSON. `` in RandomizedSearchCV your system would know to treat what inside! The only downside I see is docker_entry contains $ 1/ $ 2 '' as a literal string invoke a shell. Boy tries to escape and is then told to find a workaround for dockerfile escape double quotes commands! Can still re-publish their posts from their dashboard `` think JSON. `` become the argument for.! Invoke a command shell have escapes such as `` \n '' to produce multi-line values elements of.... Example done correctly would then look like this: Templates let you quickly Answer FAQs store. The GitLab Branch source plugin, e.g source plugin, e.g is interesting that spaces inline makes the single-quote-at-the-end.... Launches programs treat what 's inside the single quotes as the value of $ temp $!
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dockerfile escape double quotes