Docker improvements and decode loading state

- Fix .dockerignore to exclude *.img.xz files (was 2.3GB context)
- Remove deprecated 'version' attribute from docker-compose.yml
- Increase container memory limits to 2GB/1GB (prevent OOM on DCT)
- Add loading spinner to decode button during form submission

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

.dockerignore

@@ -22,8 +22,10 @@ tests/
 # Pi-specific
 rpi/
 *.img
+*.img.xz
 *.img.zst
 *.img.zst.zip
+pishrink.sh
 
 # Docs
 *.md
@@ -37,3 +39,15 @@ docs/
 *.log
 *.tmp
 .DS_Store
+
+# Dev scripts and old files
+scripts/
+old_files/
+*_old
+*_old.*
+*.bak
+*.orig
+
+# Temp files
+frontends/web/temp_files/
+*.db

docker-compose.yml

@@ -1,5 +1,3 @@
-version: '3.8'
-
 # Shared environment variables
 x-common-env: &common-env
   STEGASOO_CHANNEL_KEY: ${STEGASOO_CHANNEL_KEY:-}
@@ -30,9 +28,9 @@ services:
     deploy:
       resources:
         limits:
-          memory: 768M
+          memory: 2048M
         reservations:
-          memory: 384M
+          memory: 1024M
 
   # ============================================================================
   # REST API (FastAPI)
@@ -50,9 +48,9 @@ services:
     deploy:
       resources:
         limits:
-          memory: 768M
+          memory: 2048M
         reservations:
-          memory: 384M
+          memory: 1024M
 
 # Named volumes for persistent data
 volumes:

frontends/web/templates/decode.html

@@ -518,5 +518,8 @@ advancedOptionsDec?.addEventListener('show.bs.collapse', () => {
 advancedOptionsDec?.addEventListener('hide.bs.collapse', () => {
     document.getElementById('advancedChevronDec')?.classList.replace('bi-chevron-up', 'bi-chevron-down');
 });
+
+// Loading state for decode button
+Stegasoo.initFormLoading('decodeForm', 'decodeBtn', 'Decoding...');
 </script>
 {% endblock %}