fix: alpine docker image 2

Author: abhikaboy

backend/Dockerfile

@@ -1,38 +1,28 @@
 # Build stage
 FROM golang:1.23.4-alpine AS builder
-
 # Set working directory
 WORKDIR /app
-
 # Copy go mod and sum files first to leverage Docker cache
 COPY go.mod go.sum ./
 RUN go mod download
 COPY .env .env
-
 # Copy the source code
 COPY . .
-
 # Build the application
 RUN GOOS=linux GOARCH=amd64 CGO_ENABLED=0 go build -o /app/backend ./cmd/server/main.go
 
 # Final stage
 FROM alpine:latest
-
-# Update and install ca-certificates for HTTPS
-RUN apt-get update && apt-get install -y ca-certificates && rm -rf /var/lib/apt/lists/*
-
+# Update and install ca-certificates for HTTPS (using apk instead of apt-get)
+RUN apk update && apk add --no-cache ca-certificates && rm -rf /var/cache/apk/*
 WORKDIR /root/
-
 # Copy the binary from builder
 COPY --from=builder /app/backend /root/backend
-COPY .env /root/.env
+# Copy environment file (note: you had this twice in your original)
 COPY --from=builder /app/.env /root/.env
-
 # Copy config files if needed
 # COPY --from=builder /app/config /root/config
-
 # Expose the port your application runs on
 EXPOSE 8080
-
 # Command to run
-CMD ["./backend"]
+CMD ["./backend"]