Refactor docker-compose: single deployable file + local override

- docker-compose.yml is now the single file for Portainer (staging and prod).
  Uses registry images with ${IMAGE_TAG:-staging}, ${LOGS_PATH:-/opt/myai/logs},
  and ${FILES_PATH:-/opt/myai/files} so the same file works for all environments.
- docker-compose.override.yml adds build context, ports, and env_file for local dev
  and is auto-merged by "docker compose up" (no extra flags needed).
- .env.template documents IMAGE_TAG, LOGS_PATH, FILES_PATH alongside existing vars.
- docker-compose.dcproj updated so override file nests under docker-compose.yml in
  Solution Explorer.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docker-compose/docker-compose.override.yml

@@ -0,0 +1,54 @@
+# Local development overrides — auto-merged by "docker compose up".
+# Do NOT paste this into Portainer. It only adds build context, port mappings,
+# and env_file loading on top of docker-compose.yml.
+
+services:
+  rag-api:
+    build:
+      context: ..
+      dockerfile: Apis/rag-api/Dockerfile
+    ports:
+      - "8081:8080"
+    env_file:
+      - .env
+
+  cv-matcher-api:
+    build:
+      context: ..
+      dockerfile: Apis/cv-matcher-api/Dockerfile
+    ports:
+      - "8082:8080"
+    env_file:
+      - .env
+
+  api:
+    build:
+      context: ..
+      dockerfile: Apis/api/Dockerfile
+    ports:
+      - "8080:8080"
+    env_file:
+      - .env
+
+  cv-cleanup-job:
+    build:
+      context: ..
+      dockerfile: Jobs/cv-cleanup-job/Dockerfile
+    env_file:
+      - .env
+
+  cv-search-job:
+    build:
+      context: ..
+      dockerfile: Jobs/cv-search-job/Dockerfile
+    env_file:
+      - .env
+
+  web:
+    build:
+      context: ..
+      dockerfile: web/Dockerfile
+    ports:
+      - "5000:8080"
+    env_file:
+      - .env