Fix Docker build: add ext-zip, clean cache, fix DB_DATABASE default

- Add php zip extension to Dockerfile (required by ZipArchive)
- Remove bootstrap/cache/*.php during build to prevent stale
  dev-only service providers (e.g. BoostServiceProvider) from loading
- Default DB_DATABASE to /app/database/database.sqlite in
  docker-compose.yml so env() fallback works correctly

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

Dockerfile

@@ -45,7 +45,8 @@ LABEL org.opencontainers.image.description="Self-hosted encrypted file sharing"
 # Install required PHP extensions
 RUN install-php-extensions \
     intl \
-    pcntl
+    pcntl \
+    zip
 
 # Laravel environment defaults
 ENV APP_NAME="SealShare" \
@@ -80,8 +81,9 @@ COPY --from=vendor /app/vendor ./vendor
 # Copy built frontend assets from node stage
 COPY --from=assets /app/public/build ./public/build
 
-# Remove dev/build files not needed in production
+# Remove dev/build files and stale cache not needed in production
 RUN rm -rf node_modules tests .github docker/dev.Dockerfile docker/dev-entrypoint.sh .env .env.example \
+    bootstrap/cache/*.php \
     && mkdir -p storage/app/shares storage/app/public storage/framework/cache \
     storage/framework/sessions storage/framework/testing storage/framework/views \
     storage/logs database \

docker-compose.yml

@@ -23,7 +23,7 @@ services:
       DB_CONNECTION: ${DB_CONNECTION:-sqlite}
       DB_HOST: ${DB_HOST:-}
       DB_PORT: ${DB_PORT:-}
-      DB_DATABASE: ${DB_DATABASE:-}
+      DB_DATABASE: ${DB_DATABASE:-/app/database/database.sqlite}
       DB_USERNAME: ${DB_USERNAME:-}
       DB_PASSWORD: ${DB_PASSWORD:-}
       LOG_CHANNEL: ${LOG_CHANNEL:-stderr}
@@ -63,7 +63,7 @@ services:
       DB_CONNECTION: ${DB_CONNECTION:-sqlite}
       DB_HOST: ${DB_HOST:-}
       DB_PORT: ${DB_PORT:-}
-      DB_DATABASE: ${DB_DATABASE:-}
+      DB_DATABASE: ${DB_DATABASE:-/app/database/database.sqlite}
       DB_USERNAME: ${DB_USERNAME:-}
       DB_PASSWORD: ${DB_PASSWORD:-}
       LOG_CHANNEL: ${LOG_CHANNEL:-stderr}