adr: add microservice structure

Signed-off-by: Victor Login <batazor@evrone.com>

docs/ADR/README.md

@@ -23,6 +23,7 @@ for information team about cases for updated ADR.
   - [ADR-0006](./decisions/0006-codeowner.md) - Codeowner
   - [ADR-0011](./decisions/0011-application-architecture-documentation.md) - Application architecture documentation
   - [ADR-0012](./decisions/0012-use-monorepository.md) - Use monorepository
+  - [ADR-0021](./decisions/0021-microservice-structure.md) - Microservice structure
 - **Lifecycle**
   - [ADR-0016](./decisions/0016-lifecycle-deploy.md) - Lifecycle deploy
 - **Naming**

docs/ADR/decisions/0021-microservice-structure.md

@@ -0,0 +1,47 @@
+# 21. microservice structure
+
+Date: 2023-04-08
+
+## Status
+
+Accepted
+
+## Context
+
+We want to have a clear structure for our microservices.
+
+## Decision
+
+We will use the following structure:
+
+```
+├── ops/dockerfile/{{serviceName}}.Dockerfile
+├── ops/docker-compose/application/{{serviceName}}/{{serviceName}}.yml
+├── ops/Helm/{{serviceName}}/Chart.yaml
+├── ops/gitlab/workflows/matrix_build_base.yml
+├── ops/gitlab/workflows/matrix_build_helm.yml
+├── ops/argocd/shortlink/{{serviceName}}/application.yaml
+├── docs/c4/containers/services
+├── internal/services/{{serviceName}}
+│   ├── application/
+│   ├── cmd/
+│   ├── di/
+│   ├── domain/
+│   ├── infrastructure/
+│   ├── tests/
+│   └── README.md
+└── README.md
+```
+
+### Project README
+
+The project README should contain the following sections:
+
+- Project description
+- C4 container diagram
+- C4 component diagram
+- C4 use case diagram
+
+## Consequences
+
+We have a clear structure for our microservices.