feat: add useful cli utilities

Dockerfile

@@ -7,12 +7,16 @@ COPY --from=stage1 /app/bootstrap* /app/
 # Install common OS packages for the runtime environment.
 RUN /app/bootstrap-apt-upgrade.sh && \
     apt-get install -y --no-install-recommends \
+      bash \
       curl \
       default-libmysqlclient-dev \
       default-mysql-client \
+      dnsutils \
       git \
+      iputils-ping \
       libpq-dev \
-      nano && \
+      nano \
+      vim && \
     /app/bootstrap-apt-clean.sh
 
 COPY /app/bashrc /etc/bashrc.extra