Add ca-certs

Dockerfile

@@ -4,6 +4,7 @@ ARG repo="github.com/productionwentdown/${name}"
 
 FROM golang:1.10-alpine as go
 
+RUN apk add --no-cache ca-certificates
 ARG name
 ARG repo
 
@@ -15,12 +16,13 @@ ENV GOARCH=amd64
 RUN go build -ldflags '-extldflags "-static"' -o ${name}
 
 
-FROM alpine:3.7
+FROM scratch
 
 ARG name
 ARG repo
 
 EXPOSE 8080
+COPY --from=go /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
 COPY --from=go /go/src/${repo}/${name} /${name}
 
 ENTRYPOINT ["/email-collector"]

email-collector.go

@@ -40,22 +40,19 @@ func main() {
 		err := r.ParseForm()
 		if err != nil {
 			log.Println(err)
-			w.WriteHeader(400)
+			http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
-			w.Write([]byte("An error occurred. Please try again"))
 			return
 		}
 		email := r.Form.Get("email")
 		if err := checkmail.ValidateFormat(email); err != nil {
 			log.Println(email, err)
-			w.WriteHeader(400)
+			http.Error(w, "Email is not valid", http.StatusBadRequest)
-			w.Write([]byte("Email is not valid"))
 			return
 		}
 		err = checkmail.ValidateHost(email)
 		if _, ok := err.(checkmail.SmtpError); !ok && err != nil {
 			log.Println(email, err)
-			w.WriteHeader(400)
+			http.Error(w, "Email is not valid", http.StatusBadRequest)
-			w.Write([]byte("Email is not valid"))
 			return
 		}
 		log.Println(email, "success")
@@ -70,20 +67,20 @@ func main() {
 			payload, err := json.Marshal(object)
 			if err != nil {
 				log.Println("json.Marshal failed, not supposed to happen!")
-				w.WriteHeader(500)
+				http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
 				return
 			}
 			resp, err := http.Post(slack, "application/json", bytes.NewBuffer(payload))
 			if err != nil {
 				log.Println(err)
-				w.WriteHeader(500)
+				http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
 				return
 			}
 			defer resp.Body.Close()
 			if resp.StatusCode != http.StatusOK {
 				body, _ := ioutil.ReadAll(resp.Body)
 				log.Println(body)
-				w.WriteHeader(500)
+				http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
 				return
 			}
 		}