container: update build.sh with ability to install dependencies

Most of the logic around building and testing sambacc was in the
build.sh script already, so why not include the ability to install
the os packages too.

When called with `--install` as the first argument instead of a revision
id, we assume that the script is being called specifically and only to
install the package dependencies.

Signed-off-by: John Mulligan <[email protected]>

Author: phlogistonjohn

tests/container/build.sh

@@ -79,6 +79,59 @@ setup_update() {
     fi
 }
 
+task_sys_deps() {
+    info "installing system packages"
+    OS_VER=$(source /etc/os-release && echo "${ID}-${VERSION_ID}")
+    case "${OS_VER}" in
+        centos*)
+            info "detected centos (stream): ${OS_VER}"
+            use_centos=true
+        ;;
+        fedora*)
+            info "detected fedora: ${OS_VER}"
+            use_centos=
+        ;;
+        *)
+            info "unknown platform: ${OS_VER}"
+            return 1
+        ;;
+    esac
+
+    yum_args=("--setopt=install_weak_deps=False")
+    pkgs=(\
+        git \
+        mercurial \
+        python-pip \
+        python-pip-wheel \
+        python-setuptools \
+        python-setuptools-wheel \
+        python-tox \
+        python3-samba \
+        python3-wheel \
+        python3-pyxattr \
+        python3-devel \
+        python3.9 \
+        samba-common-tools \
+        rpm-build \
+        'python3dist(flake8)' \
+        'python3dist(inotify-simple)' \
+        'python3dist(mypy)' \
+        'python3dist(pytest)' \
+        'python3dist(pytest-cov)' \
+        'python3dist(setuptools-scm)' \
+        'python3dist(tox-current-env)' \
+        'python3dist(wheel)' \
+    )
+
+    if [ "$use_centos" ]; then
+        yum install -y epel-release
+        yum_args=(--enablerepo=crb)
+        pkgs+=(pyproject-rpm-macros)
+    fi
+    yum "${yum_args[@]}" install -y "${pkgs[@]}"
+    yum clean all
+}
+
 task_test_tox() {
     # Run tox with sitepackages enabled to allow access to system installed samba
     # modules. The container env already provides us control over the env.
@@ -150,7 +203,23 @@ export WRITABLE_PASSWD=yes
 export NSS_WRAPPER_PASSWD=/etc/passwd
 export NSS_WRAPPER_GROUP=/etc/group
 
+# when called with --install as the first argument, go into a special mode
+# typically used to just install the container's dependency packages
+if [[ "$1" = "--install" ]]; then
+    task_sys_deps
+    exit $?
+fi
+
+# if critical packages (currently just git) are missing we assume that
+# we need to automatically enable the task_sys_deps step.
+# this step is not enabled by default due to the overhead that updating
+# the dnf repos creates on the overall build time.
+if ! command -v git &>/dev/null ; then
+    tasks="$tasks task_sys_deps"
+fi
+
 
+chk task_sys_deps
 setup_fetch "$2"
 cd "${bdir}"
 setup_update "$1"