pgAdmin 4 commit: Add the ability to build a basic Docker container.

Add the ability to build a basic Docker container.

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=bcba59640834b48b95c96d0e90f8c5788ae12709

Modified Files
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.gitignore               |  1 +
Makefile                 |  8 +++-
pkg/docker/Dockerfile    | 48 ++++++++++++++++++++++++
pkg/docker/build.sh      | 98 ++++++++++++++++++++++++++++++++++++++++++++++++
pkg/docker/entry.sh      | 15 ++++++++
pkg/docker/pgadmin4.conf | 22 +++++++++++
6 files changed, 191 insertions(+), 1 deletion(-)