Resolve "Implement integration tests for applications"

Description

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

Related to #347

.devcontainer/Dockerfile

@@ -30,6 +30,9 @@ RUN apt-get update \
     && rm -Rf /usr/share/doc && rm -Rf /usr/share/man \
     && apt-get clean
 
+# Install gnmic
+RUN bash -c "$(curl -sL https://get-gnmic.openconfig.net)"
+
 # Install oh-my-zsh for more terminal features and set it as primary shell
 ENV SHELL /bin/zsh
 RUN wget https://github.com/robbyrussell/oh-my-zsh/raw/master/tools/install.sh -O - | zsh || true