Convert Gradle config parameters jib.container.environment to use lazy evaluation

[FrogDevelopper]

Just like the like the jib.container.labels , the jib.container.environment property should use lazy evaluation.
This will avoid having a mix of lazy/direct parameters set in the configuration

[diegomarquezp]

Hi @FrogDevelopper, thanks for bringing this up. We are welcoming contributions to jib and we will gladly review any incoming PRs.

We have had similar situations with other fields (e.g. #3094 and #3709) - they may be a good start point.

Thanks!

[FrogDevelopper]

@diegomarquezp
I'm trying to compile locally the project (from last tag 3.3.2) but got this error

/Users/XXXXXX/jib/jib-core/src/main/java/com/google/cloud/tools/jib/configuration/ContainerConfiguration.java:41: error: An unhandled exception was thrown by the Error Prone static analysis plugin.
public class ContainerConfiguration {
^
Please report this at https://github.com/google/error-prone/issues/new and include the following:
error-prone version: 2.10.0
BugPattern: NullAway
Stack Trace:
java.lang.ExceptionInInitializerError
at com.uber.nullaway.NullAway.collectEntities(NullAway.java:2054)
at com.uber.nullaway.NullAway.checkFieldInitialization(NullAway.java:1717)
at com.uber.nullaway.NullAway.matchClass(NullAway.java:1424)
at com.google.errorprone.scanner.ErrorProneScanner.processMatchers(ErrorProneScanner.java:449)
at com.google.errorprone.scanner.ErrorProneScanner.visitClass(ErrorProneScanner.java:547)
at com.google.errorprone.scanner.ErrorProneScanner.visitClass(ErrorProneScanner.java:150)
at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:818)
at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:82)
at com.google.errorprone.scanner.Scanner.scan(Scanner.java:74)
at com.google.errorprone.scanner.Scanner.scan(Scanner.java:48)
at jdk.compiler/com.sun.source.util.TreeScanner.scan(TreeScanner.java:106)
at jdk.compiler/com.sun.source.util.TreeScanner.scanAndReduce(TreeScanner.java:114)
at jdk.compiler/com.sun.source.util.TreeScanner.visitCompilationUnit(TreeScanner.java:145)
at com.google.errorprone.scanner.ErrorProneScanner.visitCompilationUnit(ErrorProneScanner.java:560)
at com.google.errorprone.scanner.ErrorProneScanner.visitCompilationUnit(ErrorProneScanner.java:150)
at jdk.compiler/com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:601)
at jdk.compiler/com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:56)
at com.google.errorprone.scanner.Scanner.scan(Scanner.java:58)
at com.google.errorprone.scanner.ErrorProneScannerTransformer.apply(ErrorProneScannerTransformer.java:43)
at com.google.errorprone.ErrorProneAnalyzer.finished(ErrorProneAnalyzer.java:152)
at jdk.compiler/com.sun.tools.javac.api.MultiTaskListener.finished(MultiTaskListener.java:132)
at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1423)
at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.flow(JavaCompiler.java:1370)
at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:959)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.lambda$doCall$0(JavacTaskImpl.java:104)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.handleExceptions(JavacTaskImpl.java:147)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:100)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:94)
.... (a lot more follows)

Any idea why I got this and how to fix it ?