Some time between July 2018 and November 2 2018, "docker-compose build" started to fail in step 8/14 (wdqs-frontend). Reproduced on Fedora Linux 29 and Windows 10 Pro; the latter with Docker CE.
Steps to reproduce (with "sudo" for the `docker-compose` step on Linux of course):
```
git clone https://github.com/wmde/wikibase-docker.git
cd wikibase-docker
cp docker-compose-build.yml docker-compose.yml
docker-compose build
```
Looks like it's another overly specific dependency pinning error; here's the relevant snippet from the build log for current master:
```
Step 7/14 : WORKDIR /tmp/wikidata-query-gui-master
---> Running in 2d2c2e2fac6c
Removing intermediate container 2d2c2e2fac6c
---> b420aad6a509
Step 8/14 : RUN set -x ; apk --no-cache add --virtual build-dependencies ca-certificates~=20171114-r0 git~=2.15.2-r0 nodejs~=8.9.3-r1 jq~=1.5-r5 && mv package.json package.json.orig && jq 'delpaths([["devDependencies","karma-qunit"],["devDependencies","qunitjs"],["devDependencies","sinon"]])' > package.json < package.json.orig && npm install && rm -rf /usr/share/nginx/html && mv /tmp/wikidata-query-gui-master /usr/share/nginx/html && rm -rf /tmp/* && rm -rf ~/.npm && apk del build-dependencies
---> Running in 878d99e1e588
+ apk --no-cache add --virtual build-dependencies ca-certificates~=20171114-r0 git~=2.15.2-r0 nodejs~=8.9.3-r1 jq~=1.5-r5
fetch http://dl-cdn.alpinelinux.org/alpine/v3.7/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.7/community/x86_64/APKINDEX.tar.gz
ERROR: unsatisfiable constraints:
build-dependencies-0:
masked in: cache
satisfies: world[build-dependencies]
ERROR: Service 'wdqs-frontend' failed to build: The command '/bin/sh -c set -x ; apk --no-cache add --virtual build-dependencies ca-certificates~=20171114-r0 git~=2.15.2-r0 nodejs~=8.9.3-r1 jq~=1.5-r5 && mv package.json package.json.orig && jq 'delpaths([["devDependencies","karma-qunit"],["devDependencies","qunitjs"],["devDependencies","sinon"]])' > package.json < package.json.orig && npm install && rm -rf /usr/share/nginx/html && mv /tmp/wikidata-query-gui-master /usr/share/nginx/html && rm -rf /tmp/* && rm -rf ~/.npm && apk del build-dependencies' returned a non-zero code: 2
```