ci: clamp dind MTU (runner provides DNS)

6b45c7c6f6bf5f1a842165aa4d55ff01f406979b

permissionBRICK <christoph.ambrosch@live.at>

Parents: aa7fb58b09113aabbcb68c044eb270d608e84ef5
1 files changed, +3 -1Ignore whitespace
.gitlab-ci.yml+3 -1
@@ -7,7 +7,9 @@ build-image:
77 services:
88 - name: docker:dind
99 alias: docker
10- command: ["sh", "-c", "DOCKER_TLS_CERTDIR='' exec dockerd-entrypoint.sh"]
10+ # DNS comes from the runner's GITGUD_RUNNER_JOB_DNS; --mtu clamps the
11+ # inner bridge (double NAT breaks PMTUD -> zero-byte download stalls).
12+ command: ["sh", "-c", "DOCKER_TLS_CERTDIR='' exec dockerd-entrypoint.sh --mtu=1400"]
1113 variables:
1214 DOCKER_HOST: tcp://docker:2375
1315 script: