fix invalid github endpoint var name

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:7-alpine
+FROM node:8.1.4-alpine
 
 MAINTAINER Vault-UI Contributors
 
@@ -7,7 +7,9 @@ COPY . .
 
 RUN yarn install --pure-lockfile --silent && \
     yarn run build-web && \
-    npm prune --silent --production && \
+    yarn install --silent --production && \
+    yarn check --verify-tree --production && \
+    yarn global add nodemon && \
     yarn cache clean && \
     rm -f /root/.electron/*
 

app/components/Authentication/Github/Github.jsx

@@ -535,7 +535,7 @@ export default class GithubAuthBackend extends React.Component {
                                     floatingLabelText='GitHub endpoint'
                                     fullWidth={true}
                                     floatingLabelFixed={true}
-                                    value={this.state.newConfig.endpoint}
+                                    value={this.state.newConfig.base_url}
                                     onChange={(e) => {
                                         this.setState({ newConfig: update(this.state.newConfig, { endpoint: { $set: e.target.value } }) });
                                     }}
@@ -564,4 +564,4 @@ export default class GithubAuthBackend extends React.Component {
             </div >
         );
     }
-}
+}