Ensure Docker installs dependencies cleanly (#26)

ci: Ignore package-lock.json in CI Docker builds

Author: JoshMock

.buildkite/Dockerfile

@@ -10,7 +10,7 @@ RUN apt-get clean -y && \
 
 WORKDIR /usr/src/app
 
-COPY package*.json .
+COPY package.json .
 RUN npm install
 
 COPY . .

.dockerignore

@@ -4,3 +4,4 @@ npm-debug.log
 .nyc_output
 lib
 junit-output
+package-lock.json