Change Fatal termination to Error. File .env not indispensable.

Dockerfile

@@ -1,19 +1,21 @@
-FROM golang:1.14-buster
+FROM golang:1.14-buster AS build
 
-RUN go version
 ENV GOPATH=/
+WORKDIR /src/
+COPY ./ /src/
 
-COPY ./ ./
+# build go app
+RUN go mod download; CGO_ENABLED=0 go build -o /todo-app ./cmd/main.go
 
-# install psql
-RUN apt-get update
-RUN apt-get -y install postgresql-client
 
-# make wait-for-postgres.sh executable
-RUN chmod +x wait-for-postgres.sh
+FROM alpine:latest
 
-# build go app
-RUN go mod download
-RUN go build -o todo-app ./cmd/main.go
+# copy go app, config and wait-for-postgres.sh
+COPY --from=build /todo-app /todo-app
+COPY ./configs/ /configs/
+COPY ./wait-for-postgres.sh ./
+
+# install psql and make wait-for-postgres.sh executable
+RUN apk --no-cache add postgresql-client && chmod +x wait-for-postgres.sh
 
-CMD ["./todo-app"]
+CMD ["/todo-app"]

cmd/main.go

@@ -35,7 +35,11 @@ func main() {
 	}
 
 	if err := godotenv.Load(); err != nil {
-		logrus.Fatalf("error loading env variables: %s", err.Error())
+		logrus.Errorf("error loading env variables: %s", err.Error())
+	}
+
+	if "" == os.Getenv("DB_PASSWORD") {
+		logrus.Fatalf("error cannot initializing database password")
 	}
 
 	db, err := repository.NewPostgresDB(repository.Config{

docker-compose.yml

@@ -3,7 +3,7 @@ version: '3.8'
 services:
   todo-app:
     build: ./
-    command: ./wait-for-postgres.sh db ./todo-app
+    command: sh -c "./wait-for-postgres.sh db; /todo-app"
     ports:
       - 8000:8000
     depends_on: