Add docker to the project

Dockerfile

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+# Build stage
+FROM golang:1.26.3-alpine3.23 AS builder
+WORKDIR /app
+COPY . .
+RUN go build -o main main.go
+RUN go install -tags 'postgres' github.com/golang-migrate/migrate/v4/cmd/migrate@latest
+
+# Run stage
+FROM alpine:3.23
+WORKDIR /app
+COPY --from=builder /app/main .
+COPY --from=builder /go/bin/migrate .
+COPY db/migration ./migration
+COPY app.env .
+COPY start.sh .
+RUN chmod +x /app/start.sh
+EXPOSE 8080
+ENTRYPOINT ["/app/start.sh"]
+CMD ["/app/main"]

docker-compose.yaml

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+services:
+  postgres:
+    image: postgres:16-alpine
+    ports:
+      - "25432:5432"
+    environment:
+      - POSTGRES_USER=root
+      - POSTGRES_PASSWORD=secret
+      - POSTGRES_DB=bank_db
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U root -d bank_db"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+  api:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    ports:
+      - "8080:8080"
+    environment:
+      - DB_SOURCE=postgresql://root:secret@postgres:5432/bank_db?sslmode=disable
+    depends_on:
+      postgres:
+        condition: service_healthy
+

start.sh

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+#!/bin/sh
+
+set -e
+
+echo "Run db migration"
+/app/migrate -path /app/migration -database "$DB_SOURCE" --verbose up
+
+echo "Start the app"
+exec "$@"