Fixed Dockerfile

.dockerignore

@@ -0,0 +1,7 @@
+/**
+
+!main.go
+!/lib
+!/templates
+!/go.mod
+!/go.sum

Dockerfile

@@ -27,7 +27,7 @@ ENV GO111MODULE=on
 ENV DIST_DIR=/app
 
 # Create the directory and set it as the working directory
-WORKDIR $DIST_DIR
+WORKDIR /app
 
 # Copy the Go files and download dependencies
 COPY go.mod go.sum ./