Base code for backend

Signed-off-by: KayleCoder <kalecoder@outlook.com>

.env.example

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+PORT=3000

.github/workflows/main.yml

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+name: ethda-faucet (main)
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ "main" ]
+jobs:
+  build:
+    if: github.repository == 'crustio/ethda-backend'
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [18.x]
+    steps:
+      - uses: actions/checkout@v3
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - uses: actions/cache@v3
+        with:
+          path: |
+            .yarn/cache
+            ./node_modules
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+
+      - name: Install dependencies
+        run: yarn install
+
+      - name: Build
+        run: yarn build
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Get current date
+        id: date
+        run: echo "date=$(date +'%Y%m%d%H%M%S')" >> $GITHUB_ENV
+
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: |
+            gavfu/ethda-backend:latest
+            gavfu/ethda-backend:${{ env.date }}

Dockerfile

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+# base image for local development
+FROM node:18
+WORKDIR /app
+COPY dist ./dist
+COPY node_modules ./node_modules
+CMD ["node", "./dist/index.js"]

README.md

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-# ethda-backend
+# ethda-backend
+
+## Configuration
+
+ethda-backend is configured using environment variables. You can define them using export or with an .env file.
+
+We provide a .env.example file as reference which you can use as starting point.
+
+```sell
+cp .env.example .env
+```
+
+## Running ethda-backend locally
+
+Install dependencies
+
+```sell
+npm install
+```
+
+Start server
+
+```sell
+npm run dev
+```
+
+

docker-compose.yml

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+---
+version: "3.7"
+
+services:
+  indexer:
+    image: gavfu/ethda-backend:latest
+    network_mode: host
+    restart: always
+    env_file:
+      - ".env"
+    ports:
+      - 30002:3000