fix: add API url to build

gmus-web/Makefile

@@ -3,7 +3,7 @@ TAG 	:= $$(git log -1 --pretty=%H)
 IMG 	:= ${NAME}:${TAG}
 
 build.docker:
-	docker build -t docker.fela.space/gmus-web-builder:latest -f builder.Dockerfile .
+	docker build -t docker.fela.space/gmus-web-builder:latest --build-arg REACT_APP_API_URL=${REACT_APP_API_URL} -f builder.Dockerfile .
 	docker build -t ${IMG} .
 
 push:

gmus-web/builder.Dockerfile

@@ -11,5 +11,6 @@ COPY --chown=appuser:appgroup src ./src
 COPY --chown=appuser:appgroup public ./public
 COPY --chown=appuser:appgroup README.md .env.test .prettierrc.js .eslintrc.js tsconfig.json ./
 
-ENV REACT_APP_API_URL=http://localhost:3002
+ARG REACT_APP_API_URL=http://localhost:3002
+ENV REACT_APP_API_URL=${REACT_APP_API_URL}
 RUN yarn build