added dockerfile, workflow and entrypoint

.github/workflows/build-docker-image.yaml

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+name: Publish Docker image
+
+on:
+  release:
+    types: [published]
+  workflow_dispatch: 
+
+jobs:
+  push_to_registry:
+    name: Push Docker image to Docker Hub
+    runs-on: ubuntu-latest
+    permissions:
+      packages: write
+      contents: read
+      attestations: write
+    steps:
+      - name: Check out the repo
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: '18'  # Specify your Node.js version
+
+      - name: Log in to Docker Hub
+        uses: docker/login-action@f4ef78c080cd8ba55a85445d5b36e214a81df20a
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: multiversx/mx-api-service
+
+      - name: Build and push Docker image
+        id: push
+        uses: docker/build-push-action@3b5e8027fcad23fda98b2e3ac259d8d67585f671
+        with:
+          context: .
+          file: ./Dockerfile
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}

Dockerfile

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+FROM node:18.19-alpine
+
+WORKDIR /app
+RUN chown -R node:node /app
+
+USER node
+RUN mkdir -p /app/dist/src
+COPY --chown=node . /app
+
+RUN npm install
+RUN npm run init
+RUN npm run build
+
+EXPOSE 3001
+RUN chmod +x entrypoint.sh
+
+CMD ["./entrypoint.sh"]

entrypoint.sh

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+#!/bin/sh
+# ENV VARIABLES 
+  # MVX_ENV             - defines what config to copy (default devnet)  
+  # ELASTICSEARCH_URL   - defines custom elasticsearch url - eg https://devnet-index.multiversx.com
+  # GATEWAY_URL         - defines custom gateway url - eg https://devnet-gateway.multiversx.com
+  # REDIS_IP            - defines redis ip - default 127.0.0.1 
+
+# CHECK IF ENV IS DEFINED
+if [ -n "$MVX_ENV" ] && [ "$MVX_ENV" = "devnet" ]; then
+    # Copy config file
+    cp ./config/config.${MVX_ENV}.yaml /app/dist/config/config.yaml
+
+    if [ $? -eq 0 ]; then
+        echo "Config file copied successfully from config/config.${MVX_ENV}.yaml /app/dist/config/config.yaml"
+    else
+        echo "Failed to copy the file."
+    fi
+
+else
+    cp ./config/config.devnet.yaml /app/dist/config/config.yaml
+
+    if [ $? -eq 0 ]; then
+        echo "Default config file copied successfully from config/config.devnet.yaml /app/dist/config/config.yaml"
+    else
+        echo "Failed to copy the file."
+    fi  
+fi
+
+# Replaces urls if defined
+if [ -n "$REDIS_IP" ]; then
+  echo "Redis IP defined: ${REDIS_IP}, replacing in config"
+  sed -i "s|redis: '127.0.0.1'|redis: '${REDIS_IP}'|g" /app/dist/config/config.yaml
+fi
+
+if [ -n "$ELASTICSEARCH_URL" ]; then
+  echo "Elasticsearch url defined: ${ELASTICSEARCH_URL}, replacing in config"
+  sed -i "/^  elastic:/!b; n; s|.*|    - '${ELASTICSEARCH_URL}'|" /app/dist/config/config.yaml
+fi
+
+if [ -n "$GATEWAY_URL" ]; then
+  echo "Gateway url defined: ${GATEWAY_URL}, replacing in config"
+  sed -i "/^  gateway:/!b; n; s|.*|    - '${GATEWAY_URL}'|" /app/dist/config/config.yaml
+fi
+
+
+exec /usr/local/bin/node dist/src/main.js