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I have a docker cp command in my script to copy a container directory to my host machine. In some cases the directory will not exist in docker, and I get "Error: No such container:path" Is there a way to check if this directory exists in the container, and only perform docker cp if it does?

03.04.2017 · Check your Dockerfile. ... as we've previously discussed, that directory still exists with the wgetted contents inside it. Share. Improve this answer. Follow edited May 23 '17 at 12:39. ... A solution is to remove the not empty directory using find: Dockerfile.

the content of the source directory is copied into this directory The command requires SRC_PATH and DEST_PATH to exist according to the above rules. If SRC_PATH ...

If <src> is a file or directory, then they must be relative to the source directory that is being built (the context of the build). <dest> is an absolute path, or a path relative to WORKDIR. If <dest> doesn’t exist, it is created along with all missing directories in its path. Reference - Best Practices

5” isn't under your current directory when you ran docker build. sudo ... already checked the 1st one): Check if the target directory exists and is empty.

29.09.2020 · File Existence Tests: check if a file is, or isn’t, present in the image; File Content Tests: check the content of a file; Metadata Test: check if a container metadata is correct; How to write a docker unit test. All you need is a Dockerfile and a .yaml or .json file that contains your test cases. Write your first Docker unit test

How to Conditionally Copy A File in Dockerfile

In both cases, directories or files (the <src> ) are copied and added to the ... So if both instructions are equivalent, why do they both exist and which ...

25.01.2017 · I had a case where I wanted to define a variable based on the test whether a directory exists or not at the top-most level of the Makefile where the approaches described above don't work. I found here a nice solution which can be used like this:. MY_DIRNAME=../External ifneq "$(wildcard $(MY_DIRNAME) )" "" # if directory MY_DIRNAME exists: INCLUDES += -I../External …

The operators -d allows you to test whether a file is a directory or not. For example to check whether the /etc/docker directory exist you would ...

Mar 25, 2016 · To check the existence of a file or folder, you also can use the isfolder or isfile functions. exist searches for files and folders on the search path, which can lead to unexpected results. isfolder and isfile search for files or folders only on the specified path or in the current folder, which can lead to clearer and faster results.

If file-which-may-exist is present, it will also be copied. NOTE: You should take care to ensure that your wildcard doesn't pick up other files ...

16.04.2019 · I want to check if a folder exists in my docker container called mysqlserver. The container is a Linux machine. the following command is working: # both commands print the current working directory docker exec -it mysqlserver pwd # output: / docker exec -it mysqlserver 'pwd' # output: /. so i was assuming that i can check the existance of a ...

If <src> is a file or directory, then they must be relative to the source directory that is being built (the context of the build). <dest> is an absolute path, or a path relative to WORKDIR. If <dest> doesn’t exist, it is created along with all missing directories in its path. Reference - Best Practices

This is because the command 'docker build' first provides the context directory to the docker daemon and then initiates the build process. 2) If source is a ...

25.03.2016 · To check the existence of a file or folder, you also can use the isfolder or isfile functions. exist searches for files and folders on the search path, which can lead to unexpected results. isfolder and isfile search for files or folders only on the specified path or in the current folder, which can lead to clearer and faster results.

Now, because I don't need integration test for production env, I'm using build-arg to set dev and test profiles, therefore I require if ...

06.06.2020 · Check if File Exists # When checking if a file exists, the most commonly used FILE operators are -e and -f. The first one will check whether a file exists regardless of the type, while the second one will return true only if the FILE is a regular file (not a directory or a device).

In Bash you can use the test command to check whether a file ... For example to check whether the /etc/docker directory exist you would use:.

24.11.2021 · Dockerfile: COPY folder if it exists (conditional COPY) 24th November 2021 docker, dockerfile. I have Dockerfile for NodeJS application and need to copy migrations, seeds folders inside container. But the problem is that all our applications use same Dockerfile, but not all of them work with DB and have migrations, seeds.

Hi All, Is there a way to execute COPY only if the file exists on the host? Maybe there is a way to do that check from a shell script that ...

When checking if a file exists, the most commonly used FILE operators are -e and -f.The first one will check whether a file exists regardless of the type, while the second one will return true only if the FILE is a regular file (not a directory or a device).

Sep 29, 2020 · Metadata Test: check if a container metadata is correct; How to write a docker unit test. All you need is a Dockerfile and a .yaml or .json file that contains your test cases. Write your first Docker unit test. For this example we will use the following Dockerfile for an image that can be used in the CI to build the code using Bazel.

Motivation. I want to be able to copy over certain files when building the Docker image if they exist in the current folder. Otherwise, the ...