Jenkinsfile: Build the lxc-ostree containers only for amd64-minimal

Speed things up and reduce resource consumption on a component that is
currently not a priority.

Signed-off-by: Emanuele Aina <emanuele.aina@collabora.com>

Jenkinsfile

@@ -39,6 +39,7 @@ def architectures = [
                 image: true,
                 sysroot: false,
                 ostree: true,
+                lxc: true,
             ],
             target: [
                 args: "-t demopack:${demopack}",
@@ -383,7 +384,7 @@ def buildSysroot(architecture, type, debosarguments = "") {
  *
  * @boards -- array with board names
  */
-def buildImages(architecture, type, boards, debosarguments = "", image = true, sysroot = false, ostree = false, production = false) {
+def buildImages(architecture, type, boards, debosarguments = "", image = true, sysroot = false, ostree = false, lxc = false, production = false) {
   return {
     node("docker-slave") {
       checkout scm
@@ -437,13 +438,15 @@ def buildImages(architecture, type, boards, debosarguments = "", image = true, s
                     }
                   }
 
-                  /* Create ostree and tarball for container (board name = lxc) */
-                  try {
-                    buildContainer(architecture, type, "lxc", debosarguments)
-                    buildStatus["lxc-ostree"] = true
-                  } catch (e) {
-                    // If image build failed -- do not fail other types but do not need to start tests for it
-                    buildStatus["lxc-ostree"] = false
+                  if (lxc) {
+                    /* Create ostree and tarball for container (board name = lxc) */
+                    try {
+                      buildContainer(architecture, type, "lxc", debosarguments)
+                      buildStatus["lxc-ostree"] = true
+                    } catch (e) {
+                      // If image build failed -- do not fail other types but do not need to start tests for it
+                      buildStatus["lxc-ostree"] = false
+                    }
                   }
                 }
 
@@ -526,12 +529,12 @@ buildCandidates.each { name, arch ->
         if (!params.requires) {
             /* first, build all jobs which don’t have any dependencies, in parallel */
             first_pass << [("$name $type"):
-                buildImages(name, type, merged.boards, merged.args, merged.image, merged.sysroot, merged.ostree, production)
+                buildImages(name, type, merged.boards, merged.args, merged.image, merged.sysroot, merged.ostree, merged.lxc, production)
             ]
         } else {
             /* second, build any jobs which depend on jobs from the first pass, also in parallel */
             second_pass << [("$name $type"):
-                buildImages(name, type, merged.boards, merged.args, merged.image, merged.sysroot, merged.ostree, production)
+                buildImages(name, type, merged.boards, merged.args, merged.image, merged.sysroot, merged.ostree, merged.lxc, production)
             ]
         }
     }