refactor centos-7 Dockerfile for multi-stage

Also moved package deps into spec file BuildRequires. Had to hard-code
Epoch in spec file in order to realize deps with yum-builddep.

Signed-off-by: Andrew Hsu <[email protected]>

rpm/centos-7/Dockerfile.aarch64

@@ -1,33 +1,21 @@
-FROM arm64v8/centos:7
-RUN yum groupinstall -y "Development Tools"
-RUN yum -y swap -- remove systemd-container systemd-container-libs -- install systemd systemd-libs
-RUN yum install -y \
-   glibc-static \
-   btrfs-progs-devel \
-   device-mapper-devel \
-   libseccomp-devel \
-   libselinux-devel \
-   libtool-ltdl-devel \
-   selinux-policy-devel \
-   systemd-devel \
-   pkgconfig \
-   tar \
-   git \
-   cmake \
-   rpmdevtools \
-   vim-common
-
+FROM alpine:latest as golang
+RUN apk add curl
 ARG GO_VERSION
+RUN curl -fsSL "https://golang.org/dl/go${GO_VERSION}.linux-arm64.tar.gz" | tar xzC /usr/local
+
+FROM centos:7
 ENV DISTRO centos
 ENV SUITE 7
-RUN curl -fSL "https://golang.org/dl/go${GO_VERSION}.linux-arm64.tar.gz" | tar xzC /usr/local
-RUN mkdir -p /go
 ENV GOPATH=/go
-ENV PATH $PATH:/usr/local/go/bin:/go/bin
+ENV PATH $PATH:/usr/local/go/bin:$GOPATH/bin
 ENV AUTO_GOPATH 1
 ENV DOCKER_BUILDTAGS pkcs11 seccomp selinux
 ENV RUNC_BUILDTAGS seccomp selinux
-RUN mkdir -p /go/src/github.com/docker && mkdir -p /go/src/github.com/opencontainers
 COPY docker-ce.spec /root/rpmbuild/SPECS/docker-ce.spec
+RUN yum install -y rpm-build rpmlint
+RUN rpmlint /root/rpmbuild/SPECS/docker-ce.spec # make sure spec file is ok before installing build deps
+RUN yum-builddep -y /root/rpmbuild/SPECS/docker-ce.spec # this always exits 0 so need to rpmlint before running
+RUN mkdir -p /go/src/github.com/docker /go/src/github.com/opencontainers
+COPY --from=golang /usr/local/go /usr/local/go/
 WORKDIR /root/rpmbuild
 ENTRYPOINT ["/bin/rpmbuild"]

rpm/centos-7/Dockerfile.x86_64

@@ -1,33 +1,21 @@
-FROM centos:7
-RUN yum groupinstall -y "Development Tools"
-RUN yum -y swap -- remove systemd-container systemd-container-libs -- install systemd systemd-libs
-RUN yum install -y \
-   glibc-static \
-   btrfs-progs-devel \
-   device-mapper-devel \
-   libseccomp-devel \
-   libselinux-devel \
-   libtool-ltdl-devel \
-   selinux-policy-devel \
-   systemd-devel \
-   pkgconfig \
-   tar \
-   git \
-   cmake \
-   rpmdevtools \
-   vim-common
-
+FROM alpine:latest as golang
+RUN apk add curl
 ARG GO_VERSION
+RUN curl -fsSL "https://golang.org/dl/go${GO_VERSION}.linux-amd64.tar.gz" | tar xzC /usr/local
+
+FROM centos:7
 ENV DISTRO centos
 ENV SUITE 7
-RUN curl -fSL "https://golang.org/dl/go${GO_VERSION}.linux-amd64.tar.gz" | tar xzC /usr/local
-RUN mkdir -p /go
 ENV GOPATH=/go
-ENV PATH $PATH:/usr/local/go/bin:/go/bin
+ENV PATH $PATH:/usr/local/go/bin:$GOPATH/bin
 ENV AUTO_GOPATH 1
 ENV DOCKER_BUILDTAGS pkcs11 seccomp selinux
 ENV RUNC_BUILDTAGS seccomp selinux
-RUN mkdir -p /go/src/github.com/docker && mkdir -p /go/src/github.com/opencontainers
 COPY docker-ce.spec /root/rpmbuild/SPECS/docker-ce.spec
+RUN yum install -y rpm-build rpmlint
+RUN rpmlint /root/rpmbuild/SPECS/docker-ce.spec # make sure spec file is ok before installing build deps
+RUN yum-builddep -y /root/rpmbuild/SPECS/docker-ce.spec # this always exits 0 so need to rpmlint before running
+RUN mkdir -p /go/src/github.com/docker /go/src/github.com/opencontainers
+COPY --from=golang /usr/local/go /usr/local/go/
 WORKDIR /root/rpmbuild
 ENTRYPOINT ["/bin/rpmbuild"]

rpm/centos-7/docker-ce.spec

@@ -17,6 +17,15 @@ Packager: Docker <[email protected]>
 %global is_systemd 1
 %global with_selinux 1
 
+BuildRequires: make
+BuildRequires: cmake
+BuildRequires: gcc
+BuildRequires: git
+BuildRequires: glibc-static
+BuildRequires: libtool-ltdl-devel
+BuildRequires: libseccomp-devel
+BuildRequires: device-mapper-devel
+BuildRequires: btrfs-progs-devel
 BuildRequires: pkgconfig(systemd)
 BuildRequires: pkgconfig(libsystemd-journal)