node {
    sh 'echo "FROM alpine" > Dockerfile'
    sh 'ls'
    sh 'cat Dockerfile'
    docker.build("test-image", "--file './Dockerfile' .")
}

[Pipeline] Start of Pipeline (hide)
[Pipeline] node
Running on Jenkins in /var/jenkins_home/workspace/test-pipeline
[Pipeline] {
[Pipeline] sh
+ echo FROM alpine
[Pipeline] sh
+ ls
Dockerfile
[Pipeline] sh
+ cat Dockerfile
FROM alpine
[Pipeline] sh
+ docker build -t test-image --file ./Dockerfile .
Sending build context to Docker daemon  2.048kB

Step 1/1 : FROM alpine
 ---> caf27325b298
Successfully built caf27325b298
Successfully tagged test-image:latest
[Pipeline] dockerFingerprintFrom
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
java.nio.file.NoSuchFileException: /var/jenkins_home/workspace/test-pipeline/'./Dockerfile'
	at sun.nio.fs.UnixException.translateToIOException(UnixException.java:86)
	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
	at sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
	at java.nio.file.Files.newByteChannel(Files.java:361)
	at java.nio.file.Files.newByteChannel(Files.java:407)
	at java.nio.file.spi.FileSystemProvider.newInputStream(FileSystemProvider.java:384)
	at java.nio.file.Files.newInputStream(Files.java:152)
	at hudson.FilePath.read(FilePath.java:1940)
	at org.jenkinsci.plugins.docker.workflow.FromFingerprintStep$Execution.run(FromFingerprintStep.java:100)
	at org.jenkinsci.plugins.docker.workflow.FromFingerprintStep$Execution.run(FromFingerprintStep.java:85)
	at org.jenkinsci.plugins.workflow.steps.AbstractSynchronousNonBlockingStepExecution$1$1.call(AbstractSynchronousNonBlockingStepExecution.java:47)
	at hudson.security.ACL.impersonate(ACL.java:290)
	at org.jenkinsci.plugins.workflow.steps.AbstractSynchronousNonBlockingStepExecution$1.run(AbstractSynchronousNonBlockingStepExecution.java:44)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Finished: FAILURE

[Pipeline] Start of Pipeline
[Pipeline] node
Running on Jenkins in /var/jenkins_home/workspace/test-pipeline
[Pipeline] {
[Pipeline] sh
+ echo FROM alpine
[Pipeline] sh
+ ls
Dockerfile
[Pipeline] sh
+ cat Dockerfile
FROM alpine
[Pipeline] sh
+ docker build -t test-image --file ./Dockerfile .
Sending build context to Docker daemon  2.048kB

Step 1/1 : FROM alpine
 ---> caf27325b298
Successfully built caf27325b298
Successfully tagged test-image:latest
[Pipeline] dockerFingerprintFrom
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
java.nio.file.NoSuchFileException: /var/jenkins_home/workspace/test-pipeline/'./Dockerfile'
	at sun.nio.fs.UnixException.translateToIOException(UnixException.java:86)
	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
	at sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:214)
	at java.nio.file.Files.newByteChannel(Files.java:361)
	at java.nio.file.Files.newByteChannel(Files.java:407)
	at java.nio.file.spi.FileSystemProvider.newInputStream(FileSystemProvider.java:384)
	at java.nio.file.Files.newInputStream(Files.java:152)
	at hudson.FilePath.read(FilePath.java:1940)
	at org.jenkinsci.plugins.docker.workflow.Dockerfile.parse(Dockerfile.java:62)
	at org.jenkinsci.plugins.docker.workflow.Dockerfile.<init>(Dockerfile.java:50)
	at org.jenkinsci.plugins.docker.workflow.FromFingerprintStep$Execution.run(FromFingerprintStep.java:98)
	at org.jenkinsci.plugins.docker.workflow.FromFingerprintStep$Execution.run(FromFingerprintStep.java:84)
	at org.jenkinsci.plugins.workflow.steps.AbstractSynchronousNonBlockingStepExecution$1$1.call(AbstractSynchronousNonBlockingStepExecution.java:47)
	at hudson.security.ACL.impersonate(ACL.java:290)
	at org.jenkinsci.plugins.workflow.steps.AbstractSynchronousNonBlockingStepExecution$1.run(AbstractSynchronousNonBlockingStepExecution.java:44)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Finished: FAILURE