[Bug]: Inline env variable doesn't work in "execInContainer"

[gredwhite]

Module

Core

Testcontainers version

1.18.3

Using the latest Testcontainers version?

Yes

Host OS

Windows

Host Arch

x64

Docker version

Docker version 24.0.6, build ed223bc

What happened?

In my docker desktop I execute this command successfully:

LDB_MODULES_PATH=/usr/lib/samba/ldb/ ldbmodify -H /var/lib/samba/private/sam.ldb /tmp/test.ldif 
Modified 0 records successfully

I want to do the same in testcontainers:

SAMBA_IMAGE = "instantlinux/samba-dc:4.18.5-r0"
val sambaContainer = GenericContainer(SAMBA_IMAGE)
....
sambaContainer.execInContainer(
            "LDB_MODULES_PATH=/usr/lib/samba/ldb/",
            "ldbmodify",
            "-H",
           "/var/lib/samba/private/sam.ldb",
            "/tmp/test.ldif",
        )

But I get the error:

OCI runtime exec failed: exec failed: unable to start container process: exec: "LDB_MODULES_PATH=/usr/lib/samba/ldb/": stat LDB_MODULES_PATH=/usr/lib/samba/ldb/: no such file or directory: unknown

I've found the workaround:

val sambaContainer = GenericContainer(SAMBA_IMAGE)
                     ...
                    .withEnv("LDB_MODULES_PATH","/usr/lib/samba/ldb/")
sambaContainer.start()
sambaContainer.execInContainer(
                "ldbmodify",
                "-H",
               "/var/lib/samba/private/sam.ldb",
                "/tmp/test.ldif",
            )

But I still think that my initial attempt should work.

Relevant log output

No response

Additional Information

No response

[eddumelendez]

I think you may need something like execInContainer("sh", "-c", "the whole command")

If want to receive more help, please share a reproducible project, it can be a zip file or a github repository.

[guicamest]

I had the same issue and found @eddumelendez answer really helpful, thanks a lot!

I think it would be great to mention this in the Executing commands page, wdyt?

Besides documentation, maybe it would be nice that the library provides some method for it, something like:

execInContainer(Map<String, String> env, String... command)

// or something more elaborated with some kind of exec builder:
// .env() call is optional
exec().env(Map<String, String>).run(String... command)

[eddumelendez]

See #7816

[guicamest]

Amazing, really like the improvement 💪 Thanks a lot! 🥳