Docker build fails on "go test"

[djdejawu]

docker build .

 => [internal] load build context                                                                                                                0.3s
 => => transferring context: 101.41kB                                                                                                            0.2s
 => [builder 2/9] WORKDIR /src                                                                                                                   1.0s
 => [builder 3/9] RUN apt-get update -qq && apt-get install -qqy   build-essential   libsystemd-dev                                             13.3s
 => [builder 4/9] COPY go.mod go.sum ./                                                                                                          0.1s
 => [builder 5/9] RUN go mod download                                                                                                            8.1s
 => [builder 6/9] RUN go mod verify                                                                                                              1.6s
 => [builder 7/9] COPY . .                                                                                                                       0.1s
 => ERROR [builder 8/9] RUN go test                                                                                                              8.3s
------
 > [builder 8/9] RUN go test:
8.116 2023/09/15 11:09:13 Unsupported Line: Apr 26 10:55:19 tcc1 postfix/smtpd[21126]: warning: SASL authentication failure: cannot connect to saslauthd server: Permission denied
8.116 2023/09/15 11:09:13 Unsupported Line: Apr 26 10:55:19 tcc1 postfix/smtpd[21126]: warning: SASL authentication failure: Password verification failed
8.117 2023/09/15 11:09:13 Unsupported Line: Dec 29 02:54:09 mail postfix/smtp[7648]: 732BB407C3: host mail.domain.com[1.1.1.1] said: 451 DT:SPM 163 mx13,P8CowECpNVM_oEVaenoEAQ--.23796S3 1514512449, please try again 15min later (in reply to end of DATA command)
8.117 2023/09/15 11:09:13 Unsupported Line: Feb 14 19:05:25 123-mail postfix/smtpd[1517]: table hash:/etc/postfix/virtual_mailbox_maps(0,lock|fold_fix) has changed -- restarting
8.117 2023/09/15 11:09:13 Unsupported Line: Mar 16 12:28:02 123-mail postfix/smtpd[16268]: fatal: file /etc/postfix/main.cf: parameter default_privs: unknown user name value: nobody
8.117 2023/09/15 11:09:13 Unsupported Line: Mar 16 23:30:44 123-mail postfix/qmgr[29980]: warning: please avoid flushing the whole queue when you have
8.117 2023/09/15 11:09:13 Unsupported Line: Mar 16 23:30:44 123-mail postfix/qmgr[29980]: warning: lots of deferred mail, that is bad for performance
8.118 --- FAIL: TestPostfixExporter_CollectFromLogline (0.00s)
8.118     --- FAIL: TestPostfixExporter_CollectFromLogline/Testing_levels_of_unsupported_entries (0.00s)
8.118         postfix_exporter_test.go:346:
8.118                   Error Trace:    postfix_exporter_test.go:346
8.118                                                           postfix_exporter_test.go:293
8.118                   Error:          Not equal:
8.118                                   expected: []string{"label:<name:\"level\" value:\"\" > label:<name:\"service\" value:\"smtpd\" > counter:<value:1 > ", "label:<name:\"level\" value:\"fatal\" > label:<name:\"service\" value:\"smtpd\" > counter:<value:1 > ", "label:<name:\"level\" value:\"warning\" > label:<name:\"service\" value:\"qmgr\" > counter:<value:2 > "}
8.118                                   actual  : []string{"label:<name:\"level\" value:\"fatal\" > label:<name:\"service\" value:\"smtpd\" > counter:<value:1 > ", "label:<name:\"level\" value:\"warning\" > label:<name:\"service\" value:\"qmgr\" > counter:<value:2 > ", "label:<name:\"level\" value:\"\" > label:<name:\"service\" value:\"smtpd\" > counter:<value:1 > "}
8.118
8.118                                   Diff:
8.118                                   --- Expected
8.118                                   +++ Actual
8.118                                   @@ -1,5 +1,5 @@
8.118                                    ([]string) (len=3) {
8.118                                   - (string) (len=88) "label:<name:\"level\" value:\"\" > label:<name:\"service\" value:\"smtpd\" > counter:<value:1 > ",
8.118                                     (string) (len=93) "label:<name:\"level\" value:\"fatal\" > label:<name:\"service\" value:\"smtpd\" > counter:<value:1 > ",
8.118                                   - (string) (len=94) "label:<name:\"level\" value:\"warning\" > label:<name:\"service\" value:\"qmgr\" > counter:<value:2 > "
8.118                                   + (string) (len=94) "label:<name:\"level\" value:\"warning\" > label:<name:\"service\" value:\"qmgr\" > counter:<value:2 > ",
8.118                                   + (string) (len=88) "label:<name:\"level\" value:\"\" > label:<name:\"service\" value:\"smtpd\" > counter:<value:1 > "
8.118                                    }
8.118                   Test:           TestPostfixExporter_CollectFromLogline/Testing_levels_of_unsupported_entries
8.118                   Messages:       Wrong number of unsupportedLogEntries
8.118 FAIL
8.120 exit status 1
8.120 FAIL      github.com/kumina/postfix_exporter      0.012s
------
Dockerfile:17
--------------------
  15 |     # Force the go compiler to use modules
  16 |     ENV GO111MODULE=on
  17 | >>> RUN go test
  18 |     RUN go build -o /bin/postfix_exporter
  19 |
--------------------
ERROR: failed to solve: process "/bin/sh -c go test" did not complete successfully: exit code: 1

[rdelaage]

same issue here

[maxkratz]

What were your exact steps to produce this error?

I checked out the latest commit and ran $ docker build -t $somename . and it worked fine.

[rdelaage]

Doesn't have the problem anymore