docker: bump golang version to v1.15.7

Author: guggero

Dockerfile

@@ -29,7 +29,7 @@ RUN apk add --no-cache --update alpine-sdk \
 
 # The first stage is already done and all static assets should now be generated
 # in the app/build sub directory.
-FROM golang:1.15.5-alpine as golangbuilder
+FROM golang:1.15.7-alpine as golangbuilder
 
 # Instead of checking out from git again, we just copy the whole working
 # directory of the previous stage that includes the generated static assets.

dev.Dockerfile

@@ -10,7 +10,7 @@ RUN cd /go/src/github.com/lightninglabs/lightning-terminal/app \
 
 # The first stage is already done and all static assets should now be generated
 # in the app/build sub directory.
-FROM golang:1.15.5-alpine as golangbuilder
+FROM golang:1.15.7-alpine as golangbuilder
 
 # Instead of checking out from git again, we just copy the whole working
 # directory of the previous stage that includes the generated static assets.