Move docker image definition for snap package creation to build options

IDEA-CR-32166

platform/build-scripts/groovy/org/jetbrains/intellij/build/BuildOptions.groovy

@@ -81,6 +81,12 @@ class BuildOptions {
    */
   boolean buildUnixSnaps = SystemProperties.getBooleanProperty("intellij.build.unix.snaps", false)
 
+  /**
+   * Image for snap package creation. Default is "snapcore/snapcraft:stable", but can be modified mostly due to problems
+   * with new versions of snapcraft.
+   */
+  String snapDockerImage = System.getProperty("intellij.build.snap.docker.image", "snapcore/snapcraft:stable")
+
   /**
    * Path to a zip file containing 'production' and 'test' directories with compiled classes of the project modules inside.
    */

platform/build-scripts/groovy/org/jetbrains/intellij/build/impl/LinuxDistributionBuilder.groovy

@@ -244,7 +244,7 @@ class LinuxDistributionBuilder extends OsSpecificDistributionBuilder {
         arg(value: "--volume=${unixDistPath}:/build/dist.unix:ro")
         arg(value: "--volume=${jreDirectoryPath}:/build/jre:ro")
         arg(value: "--workdir=/build")
-        arg(value: "jetbrainsinfra/snapcraft:2.35")
+        arg(value: buildContext.options.snapDockerImage)
         arg(value: "snapcraft")
         arg(value: "snap")
         arg(value: "-o")