feat: docker ctx, k8s useful links

dump/docker/context.md

@@ -0,0 +1,20 @@
+### Docker Context
+
+Docker contexts - an easy way to store connection information for multiple Docker
+engines and switch between them.
+
+> Also, can be used to switch between different Kubernetes clusters, docker
+> swarms, Amazon ECS clusters, etc.
+
+Example of environment variables, that will be switched:
+
+```bash
+DOCKER_HOST="..."
+DOCKER_TLS_VERIFY="..."
+DOCKER_CERT_PATH="..."
+```
+
+### Resources
+
+- https://www.youtube.com/watch?v=x0Kbj4lEOag
+- https://docs.docker.com/engine/context/working-with-contexts/

dump/kubernetes/useful-links.md

@@ -0,0 +1,5 @@
+How to make k8s in correct way:
+- https://www.youtube.com/watch?v=fpM_QOtRdmc
+
+Databases in k8s:
+- https://www.youtube.com/watch?v=BnegHj53pW4