fix: Fixes docker tests now that we're using curl to download configuration template file.

docker/Dockerfile

@@ -15,6 +15,7 @@ FROM swift:${SWIFT_IMAGE_VERSION}-slim
 RUN export DEBIAN_FRONTEND=nointeractive DEBCONF_NOINTERACTIVE_SEEN=true && apt-get -q update && \
   apt-get -q install -y \
   ansible \
+  curl \
   pandoc \
   texlive \
   && rm -r /var/lib/apt/lists/*

docker/Dockerfile.test

@@ -2,6 +2,11 @@
 ARG SWIFT_IMAGE_VERSION="6.0.3"
 FROM swift:${SWIFT_IMAGE_VERSION}
 
+RUN export DEBIAN_FRONTEND=nointeractive DEBCONF_NOINTERACTIVE_SEEN=true && apt-get -q update && \
+  apt-get -q install -y \
+  curl \
+  && rm -r /var/lib/apt/lists/*
+
 WORKDIR /app
 COPY ./Package.* ./
 RUN swift package resolve