feat: add simple docker compose file, change pipline, add docker build command to makefile, update db path logic in storage packages, minor fixes in handlers

backend/docs/swagger.json

@@ -168,6 +168,15 @@
                             }
                         }
                     },
+                    "404": {
+                        "description": "Post not found",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
+                    },
                     "500": {
                         "description": "Internal server error",
                         "schema": {
@@ -230,6 +239,15 @@
                     "posts"
                 ],
                 "summary": "Delete post",
+                "parameters": [
+                    {
+                        "type": "integer",
+                        "description": "Post ID",
+                        "name": "id",
+                        "in": "path",
+                        "required": true
+                    }
+                ],
                 "responses": {
                     "200": {
                         "description": "OK",