Add d to apt installs for Dockerfile

Author: ToraKuma42

d/Dockerfile

@@ -23,10 +23,15 @@ RUN wget -O linenoise.zip https://github.com/antirez/linenoise/archive/refs/head
 RUN curl -fsS https://dlang.org/install.sh | bash -s dmd
 RUN apt-get install -y dub
 
+# Install D packages
+RUN wget https://master.dl.sourceforge.net/project/d-apt/files/d-apt.list -O /etc/apt/sources.list.d/d-apt.list
+RUN apt update --allow-insecure-repositories && apt -y --allow-unauthenticated install --reinstall d-apt-keyring && apt update
+
+RUN apt-get install -y dfmt && \
+    apt-get install -y dscanner
+
 # Commands for docker run
-CMD dub run dfmt -- -h && \
-    dub run dscanner -- -h && \
-    make fmt && \
+CMD make fmt && \
     make lint && \
     make test