fix hadolint errors

See #10, release log:

• d6e2fe4 by @h1alexbel: fix(#10): fixes

Released by Rultor 2.0-SNAPSHOT, see build log

install just too

See #8, release log:

• 73ee512 by @h1alexbel: Merge pull request #9 from h1a...
• ceea51a by @h1alexbel: feat(#8): just
• 48e8d8e by @h1alexbel: fix(#7): back
• 5e16843 by @h1alexbel: fix(#7): PKG_CONFIG_PATH

Released by Rultor 2.0-SNAPSHOT, see build log

`openssl` required by crate `openssl-sys` was not found

See #5, release log:

• 98c0c22 by @h1alexbel: fix(#4): tag twice
• 86712b1 by @h1alexbel: Merge pull request #6 from h1a...
• cdcca34 by @h1alexbel: fix(#5): openssl
• 6453494 by @h1alexbel: feat(#1): settings.xml
• bb32e80 by @h1alexbel: feat(#1): version
• 840c0dc by @h1alexbel: feat(#1): README, rultor
• 85b84e5 by @h1alexbel: feat(#1): start

Released by Rultor 2.0-SNAPSHOT, see build log