apt-get before mk-build-deps

Author: sorah

debian/Dockerfile.bionic

@@ -11,5 +11,5 @@ RUN mkdir -p /build \
 RUN mkdir -p -m700 /root/.gnupg
 
 ADD control /control
-RUN mk-build-deps -i --t 'apt-get -y -o Debug::pkgProblemResolver=yes --no-install-recommends' /control
+RUN apt-get update && mk-build-deps -i --t 'apt-get -y -o Debug::pkgProblemResolver=yes --no-install-recommends' /control
 RUN apt-get install -y tzdata

debian/Dockerfile.trusty

@@ -16,5 +16,5 @@ RUN apt-get install -y apt-transport-https
 RUN echo "deb [arch=amd64] https://cache.ruby-lang.org/lab/sorah/deb/ trusty main" > /etc/apt/sources.list.d/sorah-ruby.list && apt-get update
 
 ADD control /control
-RUN mk-build-deps -i --t 'apt-get -y -o Debug::pkgProblemResolver=yes --no-install-recommends' /control
+RUN apt-get update && mk-build-deps -i --t 'apt-get -y -o Debug::pkgProblemResolver=yes --no-install-recommends' /control
 RUN apt-get install -y tzdata

debian/Dockerfile.xenial

@@ -10,5 +10,5 @@ RUN mkdir -p /build \
 RUN mkdir -p -m700 /root/.gnupg
 
 ADD control /control
-RUN mk-build-deps -i --t 'apt-get -y -o Debug::pkgProblemResolver=yes --no-install-recommends' /control
+RUN apt-get update && mk-build-deps -i --t 'apt-get -y -o Debug::pkgProblemResolver=yes --no-install-recommends' /control
 RUN apt-get install -y tzdata