Install the system and language libraries

[refs #f34238344b71]
learndocker · May 5, 2018 · 791c6a3 · 791c6a3
1 parent 003f3c9
commit 791c6a3
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/developing/webapp/Dockerfile b/developing/webapp/Dockerfile
@@ -2,7 +2,8 @@ FROM ruby:2.4.3-alpine
 
 WORKDIR /app
 
-RUN gem install sinatra
+RUN apk update && apk add build-base postgresql-dev
+RUN gem install sinatra pg
 
 COPY app.rb .