Fix docker nil pointer for endpoint host aws iam auth reconciler

[mitalipaygude]

Issue #, if available:

Description of changes:
Fix docker nil pointer for endpoint host aws iam auth reconciler
Testing (if applicable):

• manual e2e

Documentation added/planned (if applicable):

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[codecov]

Codecov Report

Attention: 30 lines in your changes are missing coverage. Please review.

Comparison is base (4583834) 73.48% compared to head (a6c6c7b) 73.56%.
Report is 58 commits behind head on main.

❗ Current head a6c6c7b differs from pull request most recent head 54ce1af. Consider uploading reports for the commit 54ce1af to get more accurate results

Files	Patch %	Lines
pkg/workflows/management/create_workload.go	0.00%	5 Missing and 1 partial ⚠️
pkg/providers/tinkerbell/validate.go	73.68%	4 Missing and 1 partial ⚠️
release/api/v1alpha1/artifacts.go	0.00%	4 Missing ⚠️
pkg/workflows/management/secrets.go	80.00%	3 Missing ⚠️
pkg/clustermanager/cluster_manager.go	88.23%	2 Missing ⚠️
pkg/providers/nutanix/controlplane.go	92.00%	1 Missing and 1 partial ⚠️
pkg/workflows/workload/create_gitops.go	84.61%	2 Missing ⚠️
pkg/workflows/workload/post_delete.go	84.61%	2 Missing ⚠️
cmd/eksctl-anywhere/cmd/deletecluster.go	0.00%	1 Missing ⚠️
cmd/eksctl-anywhere/cmd/validations.go	0.00%	1 Missing ⚠️
... and 2 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7563      +/-   ##
==========================================
+ Coverage   73.48%   73.56%   +0.07%     
==========================================
  Files         579      580       +1     
  Lines       36357    36508     +151     
==========================================
+ Hits        26718    26857     +139     
- Misses       7875     7888      +13     
+ Partials     1764     1763       -1     

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[mitalipaygude]

/approve

[eks-distro-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mitalipaygude

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