update dockerfile

Dockerfile

-FROM golang:1.21-alpine AS base
-  
-# Set up dependencies
-ENV PACKAGES git openssh-client build-base
+FROM golang:1.21-alpine AS builder
 
-# Install dependencies
-RUN apk add --update $PACKAGES
-
-# Add source files
-RUN mkdir -p ./sdk-api
-
-COPY ./ ./sdk-api/
+WORKDIR /app
 
-FROM base AS build
+COPY . .
 
-RUN cd sdk-api && go mod tidy && go build -v -o /tmp/api ./cmd/api && go build -v -o /tmp/messenger ./cmd/messenger
+RUN go mod tidy && go build -v -o /tmp/api ./cmd/api && go build -v -o /tmp/messenger ./cmd/messenger
 
-FROM alpine
+FROM alpine:latest
 
 WORKDIR /app
 
-COPY ./config.toml /config.toml
+COPY ./config.toml .
 
-COPY --from=build /tmp/api /usr/bin/api
+COPY --from=builder /tmp/api /usr/bin/api
 
-COPY --from=build /tmp/messenger /usr/bin/messenger
+COPY --from=builder /tmp/messenger /usr/bin/messenger
 
 EXPOSE 8080
\ No newline at end of file