fix(encryptid): fix Docker build context for encryptid compose

Build context was set to parent dir (..) which broke all COPY paths.
Use context: . with additional_contexts for the encryptid-sdk sibling,
matching the pattern in the main docker-compose.yml.

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

docker-compose.encryptid.yml

@@ -4,8 +4,10 @@
 services:
   encryptid:
     build:
-      context: ..
-      dockerfile: rspace-online/Dockerfile.encryptid
+      context: .
+      dockerfile: Dockerfile.encryptid
+      additional_contexts:
+        encryptid-sdk: ../encryptid-sdk
     container_name: encryptid
     restart: unless-stopped
     depends_on: