feat: add webhook Cloudron package (API-Gateway)

- Create Dockerfile for webhook (Go application)
- Add CloudronManifest.json with basic configuration
- Include README.md with usage documentation
- Add hooks.json.example configuration template
- Add logo.png (256x256)
- Add CHANGELOG.md for version tracking

Webhook is a lightweight configurable tool written in Go
that allows creating HTTP endpoints (hooks) on your server
for executing configured commands.

Package includes:
- Multi-stage Dockerfile using golang:1.21-alpine
- Cloudron base image for runtime
- Configuration on port 9000
- Localstorage addon for hooks.json
- 256MB memory limit

💘 Generated with Crush

Assisted-by: GLM-4.7 via Crush <crush@charm.land>

Package-Workspace/API-Gateway/webhook/CHANGELOG.md

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+# Changelog
+
+## [2.8.1] - 2025-01-24
+
+### Added
+- Initial Cloudron package for webhook
+- Multi-stage Dockerfile for optimized image size
+- Example hooks.json configuration file
+- Documentation and usage instructions

Package-Workspace/API-Gateway/webhook/CloudronManifest.json

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+{
+  "version": 1,
+  "manifestVersion": 2,
+  "type": "app",
+  "id": "io.cloudron.webhook",
+  "title": "Webhook",
+  "description": "A lightweight configurable tool written in Go that allows you to easily create HTTP endpoints (hooks) on your server",
+  "author": "adnanh",
+  "website": "https://github.com/adnanh/webhook",
+  "contactEmail": "cloudron@tsys.dev",
+  "tagline": "Lightweight webhook receiver for automation",
+  "version": "2.8.1",
+  "healthCheckPath": "/",
+  "httpPort": 9000,
+  "memoryLimit": 256,
+  "addons": {
+    "localstorage": true
+  },
+  "tcpPorts": {
+    "HTTP_PORT": {
+      "description": "Webhook HTTP port",
+      "defaultValue": 9000
+    }
+  },
+  "mediaLinks": [
+    "https://github.com/adnanh/webhook/raw/development/docs/logo/logo-256x256.png"
+  ],
+  "changelog": "Initial Cloudron package for webhook",
+  "icon": "file://logo.png"
+}

Package-Workspace/API-Gateway/webhook/Dockerfile

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+FROM golang:1.21-alpine AS builder
+
+# Install build dependencies
+RUN apk add --no-cache git make
+
+# Set working directory
+WORKDIR /app
+
+# Copy go mod files
+COPY repo/go.mod repo/go.sum ./
+
+# Download dependencies
+RUN go mod download
+
+# Copy source code
+COPY repo/ .
+
+# Build application
+RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-w -s" -o webhook
+
+# Final stage
+FROM cloudron/base:3.2.0
+
+# Copy binary from builder
+COPY --from=builder /app/webhook /usr/local/bin/webhook
+
+# Create data directory
+RUN mkdir -p /app/data
+
+# Set permissions
+RUN chmod +x /usr/local/bin/webhook
+
+# Set working directory
+WORKDIR /app
+
+# Expose port
+EXPOSE 9000
+
+# Start application
+CMD ["/usr/local/bin/webhook", "-hooks", "/app/data/hooks.json", "-verbose"]

Package-Workspace/API-Gateway/webhook/README.md

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+# Webhook Cloudron Package
+
+## Description
+
+Webhook is a lightweight configurable tool written in Go that allows you to easily create HTTP endpoints (hooks) on your server, which you can use to execute configured commands.
+
+## Features
+
+- Define HTTP endpoints that execute commands on your server
+- Pass data from HTTP requests to your commands
+- Specify rules that must be satisfied for hooks to trigger
+- Supports JSON and YAML configuration files
+- Trigger rules for security (secrets, headers, etc.)
+- Hot-reload configuration without restart
+- Support for multipart form data
+- Template support for request values
+
+## Configuration
+
+The webhook application reads configuration from `/app/data/hooks.json` (or `/app/data/hooks.yaml`).
+
+### Example Configuration
+
+```json
+[
+  {
+    "id": "redeploy-webhook",
+    "execute-command": "/var/scripts/redeploy.sh",
+    "command-working-directory": "/var/webhook",
+    "trigger-rule": {
+      "and": [
+        {
+          "match": {
+            "type": "payload-hmac-sha1",
+            "secret": "mysecret",
+            "parameter": {
+              "source": "header",
+              "name": "X-Hub-Signature"
+            }
+          }
+        }
+      ]
+    }
+  }
+]
+```
+
+See [webhook documentation](https://github.com/adnanh/webhook/tree/master/docs) for detailed configuration options.
+
+## Usage
+
+1. Install the webhook app on Cloudron
+2. Navigate to the File Manager
+3. Create or edit `hooks.json` in the `/app/data` directory
+4. Restart the app to apply configuration changes
+5. Access your webhook endpoints at `http://your-app.cloudron.app/hooks/{hook-id}`
+
+## Documentation
+
+For more information on configuring webhooks, visit:
+- [Hook Definition](https://github.com/adnanh/webhook/blob/master/docs/Hook-Definition.md)
+- [Hook Examples](https://github.com/adnanh/webhook/blob/master/docs/Hook-Examples.md)
+- [Hook Rules](https://github.com/adnanh/webhook/blob/master/docs/Hook-Rules.md)
+- [Webhook Parameters](https://github.com/adnanh/webhook/blob/master/docs/Webhook-Parameters.md)
+
+## Security Considerations
+
+- Always use trigger rules to secure your hooks
+- Never expose sensitive commands without proper authentication
+- Use HMAC signatures for verifying webhook sources
+- Consider IP-based rules for additional security
+
+## Upstream
+
+[GitHub Repository](https://github.com/adnanh/webhook)

Package-Workspace/API-Gateway/webhook/hooks.json.example

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+[
+  {
+    "id": "webhook",
+    "execute-command": "/home/adnan/redeploy-go-webhook.sh",
+    "command-working-directory": "/home/adnan/go",
+    "response-message": "I got the payload!",
+    "response-headers":
+    [
+      {
+        "name": "Access-Control-Allow-Origin",
+        "value": "*"
+      }
+    ],
+    "pass-arguments-to-command":
+    [
+      {
+        "source": "payload",
+        "name": "head_commit.id"
+      },
+      {
+        "source": "payload",
+        "name": "pusher.name"
+      },
+      {
+        "source": "payload",
+        "name": "pusher.email"
+      }
+    ],
+    "trigger-rule":
+    {
+      "and":
+      [
+        {
+          "match":
+          {
+            "type": "payload-hmac-sha1",
+            "secret": "mysecret",
+            "parameter":
+            {
+              "source": "header",
+              "name": "X-Hub-Signature"
+            }
+          }
+        },
+        {
+          "match":
+          {
+            "type": "value",
+            "value": "refs/heads/master",
+            "parameter":
+            {
+              "source": "payload",
+              "name": "ref"
+            }
+          }
+        }
+      ]
+    }
+  }
+]