Add file volume to the docker image

Dockerfile

@@ -15,22 +15,28 @@ RUN apk --no-cache add build-base git
 COPY . ${GOPATH}/src/code.vikunja.io/api
 WORKDIR ${GOPATH}/src/code.vikunja.io/api
 
-#Checkout version if set
+# Checkout version if set
 RUN if [ -n "${VIKUNJA_VERSION}" ]; then git checkout "${VIKUNJA_VERSION}"; fi \
  && make clean generate build
 
 ###################
 # The actual image
 # Note: I wanted to use the scratch image here, but unfortunatly the go-sqlite bindings require cgo and
-# for whatever reason, the container would not start when I compiled the image without cgo.
+# because of this, the container would not start when I compiled the image without cgo.
 FROM alpine:3.9
 LABEL maintainer="maintainers@vikunja.io"
 
 WORKDIR /app/vikunja/
 COPY --from=build-env /go/src/code.vikunja.io/api/vikunja .
-RUN chown nobody:nogroup -R /app/vikunja
+RUN adduser -S -D vikunja -h /app/vikunja -H \
+  && chown vikunja -R /app/vikunja
 ENV VIKUNJA_SERVICE_ROOTPATH=/app/vikunja/
 
-USER nobody:nogroup
+# Files permissions
+RUN mkdir /app/vikunja/files && \
+  chown -R vikunja /app/vikunja/files
+VOLUME /app/vikunja/files
+
+USER vikunja
 CMD ["/app/vikunja/vikunja"]
 EXPOSE 3456

REST-Tests/attachment_from_scratch.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+curl -X POST http://localhost:3456/api/v1/register -H 'Content-Type: application/json' -d '{"username":"demo","password":"demo","email":"demo@vikunja.io"}'
+BEARER=`curl -X POST -H 'Content-Type: application/json' -d '{"username": "demo", "password":"demo"}' localhost:3456/api/v1/login | jq -r '.token'`
+
+echo "Bearer: $BEARER"
+
+curl -X POST localhost:3456/api/v1/tokenTest -H "Authorization: Bearer $BEARER"
+
+curl -X PUT localhost:3456/api/v1/namespaces/1/lists  -H 'Content-Type: application/json' -H "Authorization: Bearer $BEARER" -d '{"title":"lorem"}'
+curl -X PUT localhost:3456/api/v1/lists/1  -H 'Content-Type: application/json' -H "Authorization: Bearer $BEARER" -d '{"text":"lorem"}'
+curl -X PUT -H "Authorization: Bearer $BEARER" localhost:3456/api/v1/tasks/1/attachments -F 'files=@/home/konrad/Pictures/Wallpaper/greg-rakozy-_Q4mepyyjMw-unsplash.jpg'