dist/ci: extract common osc setup as osc-init and provide in /usr/bin.

dist/ci/Dockerfile

@@ -34,3 +34,4 @@ COPY . /usr/src/app
 
 # Already included in target, but simulate separate container image.
 ADD dist/ci/obs-deploy /usr/bin/
+ADD dist/ci/osc-init /usr/bin/

dist/ci/obs-deploy

@@ -1,13 +1,6 @@
 #!/bin/bash
 
-cat << eom > ~/.oscrc
-[general]
-apiurl = https://api.opensuse.org
-[https://api.opensuse.org]
-user = $OBS_USER
-pass = $OBS_PASS
-email = $OBS_EMAIL
-eom
+osc-init
 
 osc checkout "$OBS_PACKAGE"
 cd "$OBS_PACKAGE"

dist/ci/osc-init

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+cat << eom > ~/.oscrc
+[general]
+apiurl = https://api.opensuse.org
+[https://api.opensuse.org]
+user = ${OBS_USER:-example}
+pass = ${OBS_PASS:-example}
+email = ${OBS_EMAIL:-example@example.com}
+eom

dist/ci/spec.sh

@@ -17,12 +17,7 @@ rpmbuild --nocheck -bb -D "jobs `nproc`" dist/package/*.spec
 rpm -iv --force --nodeps /usr/src/packages/RPMS/*/*.rpm
 
 # Ensure the staging plugin starts.
-cat << eom > ~/.oscrc
-[general]
-[https://api.opensuse.org]
-user = example
-pass = example
-eom
+osc-init
 
 osc staging --version