refactor: merge gateway functionality into frontend container

Eliminated duplicate nginx containers by merging gateway reverse proxy
functionality into the frontend container. This simplifies deployment
and reduces resource usage.

Architecture changes:
- Frontend now serves both static files AND reverse proxies to backend
- Single nginx container handles all HTTP routing
- Gateway container removed from builds and Helm chart

Dockerfile.frontend changes:
- Added upstream backend configuration
- Added proxy locations for /api, /health, /metrics, /npm, /pypi, /go, /ws
- Added rate limiting for API and downloads
- Added WebSocket support
- Configurable via BACKEND_HOST and BACKEND_PORT env vars

Helm chart changes:
- Updated frontend deployment to configure backend connection
- Simplified ingress to single route (all traffic → frontend)
- Frontend proxies backend requests internally
- Removed separate frontend/api ingress configurations

GoReleaser changes:
- Removed gohoarder-gateway Docker build
- Now builds: server, scanner, migrate, frontend (4 images)

Benefits:
- Fewer containers to manage
- Reduced complexity in Docker Compose and Kubernetes
- Single point of configuration for routing
- Better resource utilization

.goreleaser.yaml

@@ -209,28 +209,7 @@ dockers_v2:
       - internal
       - config.yaml.example
 
-  # 4. Gateway - Nginx reverse proxy for unified deployment
+  # 4. Migration Engine - Database migration tool
-  - id: gohoarder-gateway
-    images:
-      - ghcr.io/lukaszraczylo/gohoarder-gateway
-    tags:
-      - "{{ .Version }}"
-      - latest
-    platforms:
-      - linux/amd64
-      - linux/arm64
-    dockerfile: Dockerfile.gateway
-    flags:
-      - "--pull"
-      - "--label=org.opencontainers.image.title=GoHoarder Gateway"
-      - "--label=org.opencontainers.image.description=Nginx reverse proxy for unified GoHoarder deployment"
-      - "--label=org.opencontainers.image.url=https://github.com/lukaszraczylo/gohoarder"
-      - "--label=org.opencontainers.image.source=https://github.com/lukaszraczylo/gohoarder"
-      - "--label=org.opencontainers.image.version={{ .Version }}"
-      - "--label=org.opencontainers.image.created={{ .Date }}"
-      - "--label=org.opencontainers.image.revision={{ .FullCommit }}"
-
-  # 5. Migration Engine - Database migration tool
   - id: gohoarder-migrate
     images:
       - ghcr.io/lukaszraczylo/gohoarder-migrate

Dockerfile.frontend

@@ -1,4 +1,5 @@
-# Website - Frontend Dashboard
+# Website - Frontend Dashboard with integrated reverse proxy
+# Combines frontend serving and backend proxy (previously separate gateway)
 # Build stage
 FROM node:20-alpine AS builder
 
@@ -48,21 +49,129 @@ EOF
 
 RUN chmod +x /docker-entrypoint.d/40-inject-config.sh
 
-# Copy nginx configuration
+# Create nginx configuration template with backend proxy support
-RUN cat > /etc/nginx/conf.d/default.conf <<'EOF'
+RUN cat > /etc/nginx/templates/default.conf.template <<'EOF'
+# Upstream backend server
+upstream backend {
+    server ${BACKEND_HOST}:${BACKEND_PORT};
+    keepalive 32;
+}
+
+# Rate limiting zones
+limit_req_zone $binary_remote_addr zone=api_limit:10m rate=10r/s;
+limit_req_zone $binary_remote_addr zone=download_limit:10m rate=5r/s;
+
+# Cache configuration
+proxy_cache_path /var/cache/nginx/static levels=1:2 keys_zone=static_cache:10m max_size=100m inactive=60m use_temp_path=off;
+
 server {
     listen 80;
-    server_name _;
+    server_name ${SERVER_NAME};
     root /usr/share/nginx/html;
     index index.html;
 
+    # Security headers
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header X-XSS-Protection "1; mode=block" always;
+    add_header Referrer-Policy "strict-origin-when-cross-origin" always;
+
+    # Client body size for package uploads
+    client_max_body_size 500M;
+    client_body_timeout 300s;
+
+    # Logging
+    access_log /var/log/nginx/access.log combined;
+    error_log /var/log/nginx/error.log warn;
+
     # Compression
     gzip on;
     gzip_types text/plain text/css application/json application/javascript text/xml application/xml text/javascript;
 
-    # SPA routing
+    # API endpoints - proxy to backend
-    location / {
+    location /api/ {
-        try_files $uri $uri/ /index.html;
+        # Rate limiting
+        limit_req zone=api_limit burst=20 nodelay;
+
+        # Proxy settings
+        proxy_pass http://backend/;
+        proxy_http_version 1.1;
+
+        # Headers
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-Host $host;
+        proxy_set_header X-Forwarded-Port $server_port;
+        proxy_set_header Connection "";
+
+        # Timeouts for long-running operations
+        proxy_connect_timeout 60s;
+        proxy_send_timeout 300s;
+        proxy_read_timeout 300s;
+
+        # Buffer settings
+        proxy_buffering on;
+        proxy_buffer_size 4k;
+        proxy_buffers 8 4k;
+        proxy_busy_buffers_size 8k;
+    }
+
+    # Health check endpoint
+    location /health {
+        proxy_pass http://backend/health;
+        proxy_http_version 1.1;
+        proxy_set_header Connection "";
+        access_log off;
+    }
+
+    # Metrics endpoint
+    location /metrics {
+        proxy_pass http://backend/metrics;
+        proxy_http_version 1.1;
+        proxy_set_header Connection "";
+    }
+
+    # Package download endpoints with rate limiting
+    location ~ ^/(npm|pypi|go)/ {
+        limit_req zone=download_limit burst=10 nodelay;
+
+        proxy_pass http://backend;
+        proxy_http_version 1.1;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header Connection "";
+
+        # Extended timeouts for package downloads
+        proxy_connect_timeout 60s;
+        proxy_send_timeout 600s;
+        proxy_read_timeout 600s;
+
+        # Large buffer for package downloads
+        proxy_buffering on;
+        proxy_buffer_size 128k;
+        proxy_buffers 4 256k;
+        proxy_busy_buffers_size 256k;
+    }
+
+    # WebSocket support
+    location /ws/ {
+        proxy_pass http://backend/ws/;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+
+        # WebSocket timeouts
+        proxy_connect_timeout 7d;
+        proxy_send_timeout 7d;
+        proxy_read_timeout 7d;
     }
 
     # Runtime configuration endpoint
@@ -72,19 +181,23 @@ server {
         add_header Expires "0";
     }
 
-    # Security headers
-    add_header X-Frame-Options "SAMEORIGIN" always;
-    add_header X-Content-Type-Options "nosniff" always;
-    add_header X-XSS-Protection "1; mode=block" always;
-
     # Cache static assets
     location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
         expires 1y;
         add_header Cache-Control "public, immutable";
     }
+
+    # Frontend SPA - serve index.html for all other routes
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
 }
 EOF
 
+# Create cache directory
+RUN mkdir -p /var/cache/nginx/static && \
+    chown -R nginx:nginx /var/cache/nginx
+
 # Expose port
 EXPOSE 80
 
@@ -95,6 +208,10 @@ HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
 # Environment variables with defaults
 ENV API_BASE_URL=/api \
     APP_VERSION=unknown \
-    APP_NAME=GoHoarder
+    APP_NAME=GoHoarder \
+    BACKEND_HOST=gohoarder-server \
+    BACKEND_PORT=8080 \
+    SERVER_NAME=_
 
-CMD ["nginx", "-g", "daemon off;"]
+# Use nginx template substitution and start nginx
+CMD ["/bin/sh", "-c", "envsubst '$$BACKEND_HOST $$BACKEND_PORT $$SERVER_NAME' < /etc/nginx/templates/default.conf.template > /etc/nginx/conf.d/default.conf && nginx -g 'daemon off;'"]

helm/gohoarder/templates/deployment-frontend.yaml

@@ -67,11 +67,18 @@ spec:
           protocol: TCP
         env:
         - name: API_BASE_URL
-          value: {{ .Values.frontend.backendUrl | default (printf "http://%s-server:%d" (include "gohoarder.fullname" .) (.Values.server.service.port | int)) | quote }}
+          value: {{ .Values.frontend.backendUrl | default "/api" | quote }}
         - name: APP_VERSION
           value: {{ .Chart.AppVersion | quote }}
         - name: APP_NAME
           value: "GoHoarder"
+        # Backend proxy configuration (frontend now includes reverse proxy)
+        - name: BACKEND_HOST
+          value: {{ include "gohoarder.fullname" . }}-server
+        - name: BACKEND_PORT
+          value: {{ .Values.server.service.port | quote }}
+        - name: SERVER_NAME
+          value: {{ .Values.frontend.serverName | default "_" | quote }}
         {{- with .Values.frontend.env }}
         {{- toYaml . | nindent 8 }}
         {{- end }}

helm/gohoarder/templates/ingress.yaml

@@ -1,11 +1,10 @@
 {{- if .Values.ingress.enabled -}}
-{{- if .Values.ingress.frontend.enabled -}}
 apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
-  name: {{ include "gohoarder.fullname" . }}-frontend
+  name: {{ include "gohoarder.fullname" . }}
   labels:
-    {{- include "gohoarder.frontend.labels" . | nindent 4 }}
+    {{- include "gohoarder.labels" . | nindent 4 }}
   {{- with .Values.ingress.annotations }}
   annotations:
     {{- toYaml . | nindent 4 }}
@@ -14,65 +13,17 @@ spec:
   {{- if .Values.ingress.className }}
   ingressClassName: {{ .Values.ingress.className }}
   {{- end }}
-  {{- if .Values.ingress.frontend.tls.enabled }}
+  {{- if .Values.ingress.tls.enabled }}
   tls:
     - hosts:
-        - {{ .Values.ingress.frontend.host | default (printf "%s.%s" "gohoarder" .Values.global.domain) | quote }}
+        - {{ .Values.ingress.host | default (printf "%s.%s" "gohoarder" .Values.global.domain) | quote }}
-      secretName: {{ .Values.ingress.frontend.tls.secretName }}
+      secretName: {{ .Values.ingress.tls.secretName }}
   {{- end }}
   rules:
-    - host: {{ .Values.ingress.frontend.host | default (printf "%s.%s" "gohoarder" .Values.global.domain) | quote }}
+    - host: {{ .Values.ingress.host | default (printf "%s.%s" "gohoarder" .Values.global.domain) | quote }}
       http:
         paths:
-          - path: /npm
+          # Route all traffic to frontend (which now includes reverse proxy to backend)
-            pathType: Prefix
-            backend:
-              service:
-                name: {{ include "gohoarder.fullname" . }}-server
-                port:
-                  number: {{ .Values.server.service.port }}
-          - path: /pypi
-            pathType: Prefix
-            backend:
-              service:
-                name: {{ include "gohoarder.fullname" . }}-server
-                port:
-                  number: {{ .Values.server.service.port }}
-          - path: /go
-            pathType: Prefix
-            backend:
-              service:
-                name: {{ include "gohoarder.fullname" . }}-server
-                port:
-                  number: {{ .Values.server.service.port }}
-          - path: /api
-            pathType: Prefix
-            backend:
-              service:
-                name: {{ include "gohoarder.fullname" . }}-server
-                port:
-                  number: {{ .Values.server.service.port }}
-          - path: /ws
-            pathType: Prefix
-            backend:
-              service:
-                name: {{ include "gohoarder.fullname" . }}-server
-                port:
-                  number: {{ .Values.server.service.port }}
-          - path: /health
-            pathType: Prefix
-            backend:
-              service:
-                name: {{ include "gohoarder.fullname" . }}-server
-                port:
-                  number: {{ .Values.server.service.port }}
-          - path: /metrics
-            pathType: Prefix
-            backend:
-              service:
-                name: {{ include "gohoarder.fullname" . }}-server
-                port:
-                  number: {{ .Values.server.service.port }}
           - path: /
             pathType: Prefix
             backend:
@@ -81,38 +32,3 @@ spec:
                 port:
                   number: {{ .Values.frontend.service.port }}
 {{- end }}
----
-{{- if .Values.ingress.api.enabled }}
-apiVersion: networking.k8s.io/v1
-kind: Ingress
-metadata:
-  name: {{ include "gohoarder.fullname" . }}-api
-  labels:
-    {{- include "gohoarder.server.labels" . | nindent 4 }}
-  {{- with .Values.ingress.annotations }}
-  annotations:
-    {{- toYaml . | nindent 4 }}
-  {{- end }}
-spec:
-  {{- if .Values.ingress.className }}
-  ingressClassName: {{ .Values.ingress.className }}
-  {{- end }}
-  {{- if .Values.ingress.api.tls.enabled }}
-  tls:
-    - hosts:
-        - {{ .Values.ingress.api.host | default (printf "api.%s.%s" "gohoarder" .Values.global.domain) | quote }}
-      secretName: {{ .Values.ingress.api.tls.secretName }}
-  {{- end }}
-  rules:
-    - host: {{ .Values.ingress.api.host | default (printf "api.%s.%s" "gohoarder" .Values.global.domain) | quote }}
-      http:
-        paths:
-          - path: /
-            pathType: Prefix
-            backend:
-              service:
-                name: {{ include "gohoarder.fullname" . }}-server
-                port:
-                  number: {{ .Values.server.service.port }}
-{{- end }}
-{{- end }}

helm/gohoarder/values.yaml

@@ -507,21 +507,12 @@ ingress:
     nginx.ingress.kubernetes.io/proxy-read-timeout: "300"
     nginx.ingress.kubernetes.io/proxy-send-timeout: "300"
 
-  # Ingress for frontend
+  # Single ingress routes all traffic to frontend
-  frontend:
+  # Frontend now includes reverse proxy to backend (merged gateway functionality)
-    enabled: true
+  host: "gohoarder.local"
-    host: "gohoarder.local"
+  tls:
-    tls:
-      enabled: false
-      secretName: "gohoarder-frontend-tls"
-
-  # Ingress for API (if you want separate ingress)
-  api:
     enabled: false
-    host: "api.gohoarder.local"
+    secretName: "gohoarder-tls"
-    tls:
-      enabled: false
-      secretName: "gohoarder-api-tls"
 
 # Autoscaling configuration
 autoscaling: