Update Dockerfile

Dockerfile

@@ -1,6 +1,16 @@
-FROM  privoce/vocechat-server:latest
-WORKDIR /home/vocechat-server
+FROM alpine as certs
+RUN apk update && apk add ca-certificates
+
+FROM busybox
+COPY --from=certs /etc/ssl/certs /etc/ssl/certs
+COPY vocechat-server /home/vocechat-server/vocechat-server
 COPY config /home/vocechat-server/config
-RUN chmod +x vocechat-server
+COPY docker-entrypoint.sh /
+RUN chmod +x /docker-entrypoint.sh
+ENV VOCECHAT_FCM_PROJECT_ID=""\
+    VOCECHAT_FCM_PRIVATE_KEY=""\
+    VOCECHAT_FCM_CLIENT_EMAIL=""\
+    VOCECHAT_FCM_TOKEN_URI="https://oauth2.googleapis.com/token"
 EXPOSE 3000
-CMD ./vocechat-server
+WORKDIR /home/vocechat-server
+ENTRYPOINT ["/docker-entrypoint.sh"]