docker build -> build-arg not getting picked up for kubectl_version

[ClemensRieseSAS]

Regarding: https://github.com/sassoftware/viya4-deployment/blob/main/docs/user/Dependencies.md

The resulting Command would be:

docker build \
    --build-arg kustomize_version=3.7.0 \
    --build-arg kubectl_version=1.19.9 \
    --build-arg aws_iam_authenticator_version=1.18.9/2020-11-02 \
    --build-arg pip_ansible_version=2.10.7 \
    --build-arg pip_openshift_version=0.12.0 \
    --build-arg pip_kubernetes_version=12.0.1 \
    --build-arg pip_dnspython=2.1.0 \
    --build-arg ansible_galaxy_community_kubernetes_version=1.2.1 \
-t viya4-deployment .

During the build kubectl will be installed in v1.21.8. This is because of after every FROM statements all the ARGs get collected and are no longer available (see: https://stackoverflow.com/questions/44438637/arg-substitution-in-run-command-not-working-for-dockerfile)

[thpang]

I tested this and found no issue. Here are the steps I followed:

1. First build the docker image:

   docker build --file ./Dockerfile --build-arg TIMESTAMP=$(date +%s) --build-arg kubectl_version=1.21.6 --tag viya-deployment .

2. Once the image was created I ran the container:

   docker run --rm -it --group-add root --user $(id -u):$(id -g) --volume $HOME/.aws:/.aws --volume $HOME/.azure:/.azure --volume $HOME/.google:/.google --entrypoint bash viya-deployment

3. While inside the container I typed the following command:

   kubectl version

   The output is as follows:

   Client Version: version.Info{Major:"1", Minor:"21", GitVersion:"v1.21.6", GitCommit:"d921bc6d1810da51177fbd0ed61dc811c5228097", GitTreeState:"clean", BuildDate:"2021-10-27T17:50:34Z", GoVersion:"go1.16.9", Compiler:"gc", Platform:"linux/amd64"}

   Here you can see the kubectl version was set to 1.21.6 as I stated when building the image.

If you can provide more information on your issue, we'll gladly evaluate; however, given my findings if there are is no other information you can provide we'll be closing this one. Thx.

[ClemensRieseSAS]

Hello,

if found this mismatch in the docker build command:

Command:

docker build \
    --build-arg kustomize_version=3.7.0 \
    --build-arg kubectl_version=1.19.9 \
    --build-arg aws_iam_authenticator_version=1.18.9/2020-11-02 \
    --build-arg pip_ansible_version=2.10.7 \
    --build-arg pip_openshift_version=0.12.0 \
    --build-arg pip_kubernetes_version=12.0.1 \
    --build-arg pip_dnspython=2.1.0 \
    --build-arg ansible_galaxy_community_kubernetes_version=1.2.1 \
-t viya4-deployment .

Output (partial):

Step 5/23 : ARG kubectl_version=1.21.8
 ---> Running in 8a51213a2722

So is this mismatch in the docker build command just misleading? Did you try to use the "correct" kubectl (v1.19.9) specified in https://github.com/sassoftware/viya4-deployment/blob/main/docs/user/Dependencies.md?

[thpang]

@ClemensRieseSAS, have you actually run the docker image to see what kubectl version is included in the image? That's a task you have to verify.

[ClemensRieseSAS]

Hello,

you are correct: In the container/image itself the kubectl version is correct:

docker run --rm -it --group-add root --user $(id -u):$(id -g) --entrypoint bash viya4-deployment

root@d179279f08dd:~# kubectl version --client
Client Version: version.Info{Major:"1", Minor:"19", GitVersion:"v1.19.9", GitCommit:"9dd794e454ac32d97cde41ae10be801ae98f75df", GitTreeState:"clean", BuildDate:"2021-03-18T01:09:28Z", GoVersion:"go1.15.8", Compiler:"gc", Platform:"linux/amd64"}

Nether the less is the message during the docker build misleading.