Prepare chunkstorm for production (#1)

PR Blobscan/blobscan#793 adds support to store blobs in the Swarm network by using chunkstorm, and hence splitting, stamping and distributing chunks to multiple Bee nodes.

This PR adds basic features to integrate this solution into our environments:

- Added support for loading keystore (using KEYSTORE_PATH and KEYSTORE_PASSWORD variables)
- Added env var STAMPERSTORE_PATH to configure stamperstore location
- Support loading variables for .env file
- Added Dockerfile
- Added basic logger
- Cleanup: remove depth param which was unused
- Changed default port to 3050 (configurable using the PORT variable)
- Renamed TARGET variable to BEE_ENDPOINT
- Added github action for linting

Related ticket: Blobscan/blobscan#750

---------

Co-authored-by: xfja <franjimenezaguilera@gmail.com>

Author: PabloCastellano

.dockerignore

@@ -0,0 +1,31 @@
+# Version control
+.git
+.gitignore
+
+# Dependencies
+node_modules
+npm-debug.log
+
+# Environment variables
+.env
+.env.*
+
+# Build outputs
+dist
+
+# Development files
+*.test.ts
+*.spec.ts
+test
+tests
+coverage
+
+# IDE specific files
+.idea
+.vscode
+*.swp
+*.swo
+
+# OS specific files
+.DS_Store
+Thumbs.db

.env.example

@@ -0,0 +1,3 @@
+PRIVATE_KEY=0x1234567812345678123456781234567812345678123456781234567812345678
+BATCH_ID=0x1234567812345678123456781234567812345678123456781234567812345678
+BEE_ENDPOINT=http://localhost:1633

.eslintrc.json

@@ -0,0 +1,24 @@
+{
+  "root": true,
+  "parser": "@typescript-eslint/parser",
+  "plugins": ["@typescript-eslint"],
+  "extends": [
+    "eslint:recommended",
+    "plugin:@typescript-eslint/recommended"
+  ],
+  "env": {
+    "node": true,
+    "es6": true
+  },
+  "parserOptions": {
+    "ecmaVersion": 2020,
+    "sourceType": "module"
+  },
+  "rules": {
+    "no-console": "warn",
+    "no-unused-vars": "off",
+    "@typescript-eslint/no-unused-vars": ["error", { "argsIgnorePattern": "^_", "varsIgnorePattern": "^_" }],
+    "@typescript-eslint/explicit-module-boundary-types": "off",
+    "@typescript-eslint/no-explicit-any": "warn"
+  }
+}

.github/workflows/lint.yml

@@ -0,0 +1,29 @@
+name: Lint
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run ESLint
+        run: npm run lint
+
+      - name: Check TypeScript
+        run: npx tsc --noEmit

.gitignore

@@ -2,4 +2,5 @@ node_modules
 dist
 *.bin
 *.txt
-*.log
+*.log
+.env

Dockerfile

@@ -0,0 +1,45 @@
+
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+ENV NODE_ENV=production
+
+COPY package*.json ./
+
+RUN npm install
+
+COPY tsconfig.json ./
+COPY src ./src
+
+RUN npm run build
+
+FROM node:20-alpine
+
+LABEL maintainer="Blobscan Team"
+LABEL org.opencontainers.image.title="ChunkStorm"
+LABEL org.opencontainers.image.description="Simple Node.js server that splits, stamps and distributes chunks to multiple Bee nodes."
+LABEL org.opencontainers.image.created="$(date -u +'%Y-%m-%dT%H:%M:%SZ')"
+
+ENV NODE_ENV=production
+ENV STAMPERSTORE_PATH=/app/stamperstore
+
+WORKDIR /app
+RUN addgroup --system --gid 1001 nodejs && \
+    adduser --system --uid 1001 --ingroup nodejs --shell /bin/sh nodeuser && \
+    chown -R nodeuser:nodejs /app
+
+COPY package*.json ./
+
+RUN npm ci --only=production && npm cache clean --force
+
+COPY --from=builder --chown=nodeuser:nodejs /app/dist ./dist
+
+USER nodeuser
+
+EXPOSE 3050
+
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+  CMD wget --no-verbose --tries=1 --spider http://localhost:3050/health || exit 1
+
+CMD ["node", "dist/index.js"]