Dockerfile-maven: Provide a way to specify temporary directory for dockerbuilds - unable to write to /tmp

[ottlinger]

Description

We are using docker-client indirectly via https://github.com/spotify/dockerfile-maven
in an environment that forbids writing to /tmp.

The dockerfile maven plugin uses the underlying DockerClient to build the image.
Setting TMPDIR environment variable does not help as the call to docker seems to write to /tmp.

It should be possible to provide a way to specify or configure the underlying temporary directory:

• via system variable or
• configuration option.

I filed a copy of that bug in:
https://github.com/spotify/docker-client/issues/1028
since I'm not sure if the maven plugin can override/set the temporary directory.

How to reproduce

Run a project using dockerfile-maven-plugin in an environment where /tmp does not exist or is not writable.

What happened instead

Calling
export TMPDIR=/myown/tmp/; mvn clean package
yields an exception that the docker image cannot be build.

Software:

• dockerfile-maven-plugin-version: 1.4.2
• docker version: Docker version 18.03.1-ce, build 9ee9f40
• Spotify's docker-client version: 8.11.4

Full backtrace

[ERROR] Failed to execute goal com.spotify:dockerfile-maven-plugin:1.4.2:build (build-image) on project myservice-service: Could not build image: java.util.concurrent.ExecutionException: com.spotify.docker.client.shaded.javax.ws.rs.ProcessingException: java.lang.UnsatisfiedLinkError: could not load FFI provider jnr.ffi.provider.jffi.Provider: ExceptionInInitializerError: Can't overwrite cause with java.lang.UnsatisfiedLinkError: java.lang.UnsatisfiedLinkError: /tmp/jffi2179256339637090906.so: /tmp/jffi2179256339637090906.so: failed to map segment from shared object: Operation not permitted
[ERROR]     at java.lang.ClassLoader$NativeLibrary.load(Native Method)
[ERROR]     at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
[ERROR]     at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1824)
[ERROR]     at java.lang.Runtime.load0(Runtime.java:809)
[ERROR]     at java.lang.System.load(System.java:1086)
[ERROR]     at com.kenai.jffi.internal.StubLoader.loadFromJar(StubLoader.java:371)
[ERROR]     at com.kenai.jffi.internal.StubLoader.load(StubLoader.java:258)
[ERROR]     at com.kenai.jffi.internal.StubLoader.<clinit>(StubLoader.java:444)
[ERROR]     at java.lang.Class.forName0(Native Method)
[ERROR]     at java.lang.Class.forName(Class.java:348)
[ERROR]     at com.kenai.jffi.Init.load(Init.java:68)
[ERROR]     at com.kenai.jffi.Foreign$InstanceHolder.getInstanceHolder(Foreign.java:49)
[ERROR]     at com.kenai.jffi.Foreign$InstanceHolder.<clinit>(Foreign.java:45)
[ERROR]     at com.kenai.jffi.Foreign.getInstance(Foreign.java:103)
[ERROR]     at com.kenai.jffi.Type$Builtin.lookupTypeInfo(Type.java:242)
[ERROR]     at com.kenai.jffi.Type$Builtin.getTypeInfo(Type.java:237)
[ERROR]     at com.kenai.jffi.Type.resolveSize(Type.java:155)
[ERROR]     at com.kenai.jffi.Type.size(Type.java:138)
[ERROR]     at jnr.ffi.provider.jffi.NativeRuntime$TypeDelegate.size(NativeRuntime.java:187)
[ERROR]     at jnr.ffi.provider.AbstractRuntime.<init>(AbstractRuntime.java:48)
[ERROR]     at jnr.ffi.provider.jffi.NativeRuntime.<init>(NativeRuntime.java:66)
[ERROR]     at jnr.ffi.provider.jffi.NativeRuntime.<init>(NativeRuntime.java:41)
[ERROR]     at jnr.ffi.provider.jffi.NativeRuntime$SingletonHolder.<clinit>(NativeRuntime.java:62)
[ERROR]     at jnr.ffi.provider.jffi.NativeRuntime.getInstance(NativeRuntime.java:58)
[ERROR]     at jnr.ffi.provider.jffi.Provider.<init>(Provider.java:29)
[ERROR]     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
[ERROR]     at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
[ERROR]     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
[ERROR]     at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
[ERROR]     at java.lang.Class.newInstance(Class.java:442)
[ERROR]     at jnr.ffi.provider.FFIProvider$SystemProviderSingletonHolder.getInstance(FFIProvider.java:68)
[ERROR]     at jnr.ffi.provider.FFIProvider$SystemProviderSingletonHolder.<clinit>(FFIProvider.java:57)
[ERROR]     at jnr.ffi.provider.FFIProvider.getSystemProvider(FFIProvider.java:35)
[ERROR]     at jnr.ffi.LibraryLoader.create(LibraryLoader.java:73)
[ERROR]     at jnr.unixsocket.Native.<clinit>(Native.java:76)
[ERROR]     at jnr.unixsocket.UnixSocketChannel.<init>(UnixSocketChannel.java:101)
[ERROR]     at jnr.unixsocket.UnixSocketChannel.open(UnixSocketChannel.java:60)
[ERROR]     at com.spotify.docker.client.UnixConnectionSocketFactory.createSocket(UnixConnectionSocketFactory.java:69)
[ERROR]     at com.spotify.docker.client.UnixConnectionSocketFactory.createSocket(UnixConnectionSocketFactory.java:44)
[ERROR]     at com.spotify.docker.client.shaded.org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:118)
[ERROR]     at com.spotify.docker.client.shaded.org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:353)
[ERROR]     at com.spotify.docker.client.shaded.org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:380)
[ERROR]     at com.spotify.docker.client.shaded.org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)
[ERROR]     at com.spotify.docker.client.shaded.org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:184)
[ERROR]     at com.spotify.docker.client.shaded.org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:88)
[ERROR]     at com.spotify.docker.client.shaded.org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
[ERROR]     at com.spotify.docker.client.shaded.org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
[ERROR]     at com.spotify.docker.client.shaded.org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:71)
[ERROR]     at com.spotify.docker.client.shaded.org.glassfish.jersey.apache.connector.ApacheConnector.apply(ApacheConnector.java:435)
[ERROR]     at com.spotify.docker.client.shaded.org.glassfish.jersey.apache.connector.ApacheConnector$1.run(ApacheConnector.java:491)
[ERROR]     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[ERROR]     at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[ERROR]     at jersey.repackaged.com.google.common.util.concurrent.MoreExecutors$DirectExecutorService.execute(MoreExecutors.java:299)
[ERROR]     at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112)
[ERROR]     at jersey.repackaged.com.google.common.util.concurrent.AbstractListeningExecutorService.submit(AbstractListeningExecutorService.java:50)
[ERROR]     at jersey.repackaged.com.google.common.util.concurrent.AbstractListeningExecutorService.submit(AbstractListeningExecutorService.java:37)
[ERROR]     at com.spotify.docker.client.shaded.org.glassfish.jersey.apache.connector.ApacheConnector.apply(ApacheConnector.java:487)
[ERROR]     at com.spotify.docker.client.shaded.org.glassfish.jersey.client.ClientRuntime$2.run(ClientRuntime.java:178)
[ERROR]     at com.spotify.docker.client.shaded.org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
[ERROR]     at com.spotify.docker.client.shaded.org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
[ERROR]     at com.spotify.docker.client.shaded.org.glassfish.jersey.internal.Errors.process(Errors.java:315)
[ERROR]     at com.spotify.docker.client.shaded.org.glassfish.jersey.internal.Errors.process(Errors.java:297)
[ERROR]     at com.spotify.docker.client.shaded.org.glassfish.jersey.internal.Errors.process(Errors.java:267)
[ERROR]     at com.spotify.docker.client.shaded.org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:340)
[ERROR]     at com.spotify.docker.client.shaded.org.glassfish.jersey.client.ClientRuntime$3.run(ClientRuntime.java:210)
[ERROR]     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[ERROR]     at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[ERROR]     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[ERROR]     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[ERROR]     at java.lang.Thread.run(Thread.java:748)
[ERROR] -> [Help 1]

[ottlinger]

After some investigation and trying DOCKER_TMP/TEMPDIR I can say that setting
mvn -Djava.io.tmpdir=/myowntmp works fine as well and makes the builds green again.

[lassounski]

After some investigation and trying DOCKER_TMP/TEMPDIR I can say that setting
mvn -Djava.io.tmpdir=/myowntmp works fine as well and makes the builds green again.

Life saver!