- apt-get -y install --no-install-recommends curl ca-certificates gpg procps && \
- gpg --import /tmp/D39DC0E3.asc && \
+ apt-get -y install --no-install-recommends curl ca-certificates gpg procps
+
+# Install RVM
+ADD generated/rvm.asc /tmp/
+RUN gpg --no-tty --import /tmp/rvm.asc && \