PowerShell 7.3 installs to a new directory and runs side-by-side with Windows PowerShell 5.1. PowerShell 7.3 is an in-place upgrade that replaces PowerShell 7.0 and lower.
error NU1202: Package PowerShell 7.3.0 is not compatible with net6.0 (.NETCoreApp,Version=v6.0) / any. Package PowerShell 7.3.0 supports: net7.0 (.NETCoreApp,Version=v7.0) / any The tool package could not be restored. Tool ‘powershell’ failed to install. This failure may have been caused by:
* You are attempting to install a preview release and did not use the –version option to specify the version. * A package by this name was found, but it was not a .NET tool. * The required NuGet feed cannot be accessed, perhaps because of an Internet connection problem. * You mistyped the name of the tool.
In order to resolve the error you should install .NET 7.
Each layer is an image itself, just one without a human-assigned tag. They have auto-generated IDs though.
Each layer stores the changes compared to the image it’s based on.
An image can consist of a single layer (that’s often the case when the squash command was used).
Each instruction in a Dockerfile results in a layer. (Except for multi-stage builds, where usually only the layers in the final image are pushed, or when an image is squashed to a single layer).
Layers are used to avoid transferring redundant information and skip build steps which have not changed (according to the Docker cache).
But what if you want to combine all the layers of an image into one single piece? This is why squash has been created.
How –squash works
Once the build is complete, Docker creates a new image loading the diffs from each layer into a single new layer and references all the parent’s layers. In other words: when squashing, Docker will take all the filesystem layers produced by a build and collapse them into a single new layer.
Build image without squash
docker build . -t test
Build image with squash
docker build . -t test1 --squash
In order to use squash command you will need to have experimental features enabled.
Navigate in docker desktop settings and in Windows (which is what I currently use) you should go on Docker Engine tab and change the experimental value to true.
After that you can run your docker command using —squash
Considering that you have a docker container that runs an operating system, you could install docker inside it in order to use docker commands. Lets take for example the below Dockerfile. This will use the windows server core image and will install docker on it.
As a result the administrator could execute docker commands by taking a prompt on the container. However not all commands will work if you do not perform the below volume binding. When you spin up a new container using the image that you created with the Dockerfile you should also use the below command. This way you could use docker commands like docker build, docker push etc.