Add Docker.json and update Dockerfile. See #157

Former-commit-id: 02381af5eb56c6d17416b187abac0c5b0067179b [formerly 4ee41157924a7ebbeefd31ddd55919317da6a4fe] [formerly 914325aefc9c3f622b3368289f3499c526943b56 [formerly 02c98905ae]]
Former-commit-id: 5c9112505577abeb82bb0e9f6f04081b63838dbf [formerly 82821dd7c2a3bd04d11148b43c45cbd8331e7138]
Former-commit-id: 121ad025499afafc25ca21e322783aa91ac6ebf2

Docker.json

@@ -0,0 +1,10 @@
+{
+  "port": 80,
+  "address": "",
+  "database": "/etc/database.db",
+  "scope": "/srv",
+  "allowCommands": true,
+  "allowEdit": true,
+  "allowNew": true,
+  "commands": []
+}

Dockerfile

@@ -1,9 +1,18 @@
 FROM golang:alpine
+
 COPY . /go/src/github.com/hacdias/filemanager
+
 WORKDIR /go/src/github.com/hacdias/filemanager
 RUN apk add --no-cache git
 RUN go get ./...
+
 WORKDIR /go/src/github.com/hacdias/filemanager/cmd/filemanager
-RUN go build
-ENTRYPOINT ["/go/src/github.com/hacdias/filemanager/cmd/filemanager/filemanager"]
-CMD ["-h"]
+RUN go install
+
+VOLUME /srv
+EXPOSE 80
+
+COPY Docker.json /etc/config.json
+
+ENTRYPOINT ["/go/bin/filemanager"]
+CMD ["--config", "/etc/config.json"]