chore: CI files update (#306)

* Update Dockerfile

- Fix FromAsCasing
- Copy `cmd` and `internal` directories only for backend

* Export binaries from docker images

* Create release with assets from workflow

* Remove circleci config

* fix chart publishing

.dockerignore

@@ -1,5 +1,14 @@
-.github/
-**/.vscode/
-docs/
-frontend/node_modules/
-internal/app/api/core/frontend-dist
+# Ignore everything
+*
+
+# Allow backend files
+!cmd/
+!internal/
+!go.mod
+!go.sum
+
+# Allow frontend files
+!frontend/
+
+# Ignore node_modules
+**/node_modules/