Changed the way that the migration get's triggered

Dockerfile

@@ -6,6 +6,7 @@ RUN yarn --production --frozen-lockfile
 COPY migrations ./migrations
 COPY src/server.js ./
 COPY knexfile.js ./
+RUN mkdir db
 # 
 # FROM astefanutti/scratch-node:16.0.0
 FROM node:16.6.2-alpine3.14
@@ -13,4 +14,4 @@ WORKDIR /app
 COPY --from=0 /app /app
 ENV NODE_ENV production
 EXPOSE 3000
-ENTRYPOINT ["node", "./server.js"]
+ENTRYPOINT ["/bin/sh", "-c", "yarn migrate && node ./server.js"]