fix: Remove invalid --production=false flag from Dockerfile

Bun no longer accepts --production=false syntax. DevDependencies
are included by default during install.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Dockerfile.encryptid

@@ -10,7 +10,7 @@ WORKDIR /app
 COPY package.json bun.lockb* ./
 
 # Install dependencies
-RUN bun install --frozen-lockfile --production=false
+RUN bun install --frozen-lockfile
 
 # Copy source
 COPY src/encryptid ./src/encryptid