From 9711fa1f2471b12ddf93d667cd10996f01ea0593 Mon Sep 17 00:00:00 2001
From: Neal Clark <nclark@thrownproject.com>
Date: Fri, 18 Jun 2021 09:33:44 -0700
Subject: [PATCH] Update "Deploying with Docker" docs for Elixir 1.12

includes libstdc++ in final image for OTP 24
---
 docs/guides/working_with_docker.md | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/docs/guides/working_with_docker.md b/docs/guides/working_with_docker.md
index 8632d656..d6633bba 100644
--- a/docs/guides/working_with_docker.md
+++ b/docs/guides/working_with_docker.md
@@ -28,9 +28,9 @@ following content:
 ```docker
 # The version of Alpine to use for the final image
 # This should match the version of Alpine that the `elixir:1.7.2-alpine` image uses
-ARG ALPINE_VERSION=3.8
+ARG ALPINE_VERSION=3.13
 
-FROM elixir:1.7.2-alpine AS builder
+FROM elixir:1.12.1-alpine AS builder
 
 # The following are build arguments used to change variable parts of the image.
 # The name of your application/release (required)
@@ -98,7 +98,8 @@ ARG APP_NAME
 RUN apk update && \
     apk add --no-cache \
       bash \
-      openssl-dev
+      openssl-dev \
+      libstdc++
 
 ENV REPLACE_OS_VARS=true \
     APP_NAME=${APP_NAME}