{"id":6909,"date":"2019-01-11T22:22:26","date_gmt":"2019-01-11T21:22:26","guid":{"rendered":"https:\/\/pi3g.com\/?p=6909"},"modified":"2019-01-11T22:22:26","modified_gmt":"2019-01-11T21:22:26","slug":"install-crystal-on-docker-how-to-add-the-crystal-repository-to-docker-in-the-dockerfile","status":"publish","type":"post","link":"https:\/\/pi3g.com\/de\/install-crystal-on-docker-how-to-add-the-crystal-repository-to-docker-in-the-dockerfile\/","title":{"rendered":"Crystal auf Docker installieren: So f\u00fcgen Sie das Crystal-Repository in der Dockerdatei zu Docker hinzu"},"content":{"rendered":"

Dockerfile (excerpt)<\/h2>\n
\n

ENV APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE=DontWarn
\nRUN apt-get update && apt-get install -y \\
         software-properties-common \\
         build-essential \\
         libevent-dev \\
         libssl-dev \\
         libxml2-dev \\
         libyaml-dev \\
         libgmp-dev \\
         libreadline-dev \\
         apt-transport-https \\
         iputils-ping \\
         git \\
         aptitude \\
         nano \\
         openssh-server \\
         && apt-key adv –keyserver keys.gnupg.net –recv-keys 09617FD37CC06B54 \\
         && add-apt-repository ‘deb https:\/\/dist.crystal-lang.org\/apt<\/a> crystal main’ \\
         && apt-get update \\
         && apt-get install -y crystal \\
         &&  rm -rf \/var\/lib\/apt\/lists\/* \\
         && mkdir \/root\/.ssh<\/p>\n<\/blockquote>\n

The ENV APT_KEY_DONT_WARN_ON_DANGEROUSE_USAGE<\/strong> is needed<\/strong> for apt-key adv not choking on not being run from a terminal.<\/p>\n

To add the Crystal repository, the key needs to be installed<\/h2>\n
\n

W: GPG error: https:\/\/dist.crystal-lang.org\/apt<\/a> crystal InRelease: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 09617FD37CC06B54
\nE: The repository ‘https:\/\/dist.crystal-lang.org\/apt<\/a> crystal InRelease’ is not signed.<\/p>\n<\/blockquote>\n

When you add the key using a Dockerfile, you might get the following error message:<\/h2>\n
\n

Executing: \/tmp\/apt-key-gpghome.daecBAEPSJ\/gpg.1.sh –keyserver keys.gnupg.net –recv-keys 09617FD37CC06B54
\ngpg: keyserver receive failed: Cannot assign requested address<\/p>\n<\/blockquote>\n

This is due to gpg not being able to bind to an IPv6 address. Therefore you have to <\/p>\n

enable IPv6 support on your host for Docker:<\/h2>\n

edit \/ create \/etc\/docker\/daemon.json<\/strong><\/p>\n

\n
{\n  \"ipv6\": true,\n  \"fixed-cidr-v6\": \"2001:db8:1::\/64\"\n}<\/code><\/pre>\n

<\/code><\/pre>\n<\/blockquote>\n
And restart the docker service:<\/p>\n
\n
service docker restart<\/code><\/p>\n<\/blockquote>\n
<\/pre>\n
<\/p>\n
the fixed-cidr-v6 is NOT<\/strong> optional as https:\/\/docs.docker.com\/config\/daemon\/ipv6\/<\/a> might lead you to believe.<\/p>\n
test for IPv6 support:<\/p>\n
\n
docker run -it alpine ash -c \"ip -6 addr show dev eth0; ip -6 route show\"<\/code><\/pre>\n<\/blockquote>\n
if it returns nothing, then ipv6 is NOT enabled<\/font><\/code><\/pre>\n
sample output with IPv6 enabled:<\/font><\/code><\/font><\/code><\/pre>\n
\n
max@morpheus:~\/docker$ docker run -it alpine ash -c “ip -6 addr show dev eth0; ip -6 route show”
\n163: eth0@if164: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 state UP
     inet6 2001:db8:1::242:ac11:2\/64 scope global flags 02
        valid_lft forever preferred_lft forever
     inet6 fe80::42:acff:fe11:2\/64 scope link tentative
        valid_lft forever preferred_lft forever
\n2001:db8:1::\/64 dev eth0  metric 256
\nfe80::\/64 dev eth0  metric 256
\ndefault via 2001:db8:1::1 dev eth0  metric 1024
\nff00::\/8 dev eth0  metric 256\n<\/p>\n

<\/code><\/pre>\n

<\/pre>\n<\/blockquote>\n
Failed to start Docker Application Container Engine.<\/h2>\n
\n
tail \u2013n 50 \/var\/log\/syslog<\/p>\n<\/blockquote>\n
Jan 11 21:39:35 morpheus dockerd[697]: time=”2019-01-11T21:39:35.770500563+01:00″ level=warning msg=”Your kernel does not support swap memory limit”
\nJan 11 21:39:35 morpheus dockerd[697]: time=”2019-01-11T21:39:35.770617796+01:00″ level=warning msg=”Your kernel does not support cgroup rt period”
\nJan 11 21:39:35 morpheus dockerd[697]: time=”2019-01-11T21:39:35.770656361+01:00″ level=warning msg=”Your kernel does not support cgroup rt runtime”<\/p>\n
Jan 11 21:39:40 morpheus dockerd[697]: time=”2019-01-11T21:39:40.800355314+01:00″ level=info msg=”Default bridge (docker0) is assigned with an IP address 172.17.0.0\/16. Daemon option –bip can be used to set a preferred IP address”<\/p>\n
Jan 11 21:39:40 morpheus dockerd[697]: Error starting daemon: Error initializing network controller: Error creating default “bridge” network: could not find an available, non-overlapping IPv6 address pool among the defaults to assign to the network<\/strong><\/p>\n
If the docker daemon does not start, look at \/var\/log\/syslog to find the reason. <\/p>\n
Here it probably means that you have not added the fixed-cidr-v6 <\/strong>as indicated by me above! Docker, since a couple of versions, seems to require this. There is an issue in GitHub about it.<\/p>\n
<\/p>\n
and all this for \u2026<\/p>\n
\"image\"<\/a><\/p>\n
References
<\/h3>\n
https:\/\/github.com\/inversepath\/usbarmory-debian-base_image\/issues\/9<\/a><\/p>\n
https:\/\/docs.docker.com\/v17.09\/engine\/userguide\/networking\/default_network\/ipv6\/<\/a><\/p>\n
https:\/\/github.com\/moby\/moby\/issues\/36954<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
Dockerfile (Auszug) ENV APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE=DontWarn RUN apt-get update && apt-get install -y \\ software-properties-common \\ build-essential \\ libevent-dev \\ libssl-dev \\ libxml2-dev \\ libyaml-dev \\ libgmp-dev \\ libreadline-dev \\ apt-transport-https \\ iputils-ping \\ git \\ aptitude \\ nano \\ openssh-server \\ && apt-key adv -keyserver keys.gnupg.net -recv-keys 09617FD37CC06B54 \\ && add-apt-repository 'deb https:\/\/dist.crystal-lang.org\/apt crystal...<\/p>","protected":false},"author":830,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[416,467],"tags":[473,472,409,468,474,470,471,312,469],"class_list":["post-6909","post","type-post","status-publish","format-standard","hentry","category-crystal-language","category-docker","tag-adding-key","tag-apt-key","tag-crystal","tag-docker","tag-docker-daemon-not-starting","tag-dockerfile","tag-gpg","tag-ipv6","tag-repository"],"_links":{"self":[{"href":"https:\/\/pi3g.com\/de\/wp-json\/wp\/v2\/posts\/6909","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pi3g.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pi3g.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pi3g.com\/de\/wp-json\/wp\/v2\/users\/830"}],"replies":[{"embeddable":true,"href":"https:\/\/pi3g.com\/de\/wp-json\/wp\/v2\/comments?post=6909"}],"version-history":[{"count":1,"href":"https:\/\/pi3g.com\/de\/wp-json\/wp\/v2\/posts\/6909\/revisions"}],"predecessor-version":[{"id":6910,"href":"https:\/\/pi3g.com\/de\/wp-json\/wp\/v2\/posts\/6909\/revisions\/6910"}],"wp:attachment":[{"href":"https:\/\/pi3g.com\/de\/wp-json\/wp\/v2\/media?parent=6909"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pi3g.com\/de\/wp-json\/wp\/v2\/categories?post=6909"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pi3g.com\/de\/wp-json\/wp\/v2\/tags?post=6909"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}