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Add support for custom Dockerfile template #5

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Add support for custom Dockerfile template #5

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12 changes: 10 additions & 2 deletions src/rebar3_docker_build.erl
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Original file line number Diff line number Diff line change
Expand Up @@ -38,8 +38,7 @@ do(RState) ->
{ok, RState2} ->
Config = rebar3_docker_util:config(RState2),
Params = template_parameters(RState2, Config),
TemplateFile = filename:join([code:priv_dir(rebar3_docker),
"templates", "Dockerfile"]),
TemplateFile = template_file(RState2, Config),
Template = bbmustache:parse_file(TemplateFile),
Data = bbmustache:compile(Template, Params,
[{key_type, atom}, {escape_fun, fun(X) -> X end}]),
Expand Down Expand Up @@ -86,6 +85,15 @@ template_parameters(RState, Config) ->
runtime_packages => [#{name => N}
|| N <- maps:get(runtime_packages, Config)]
}.
template_file(RState, Config) ->
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@sylane sylane Mar 30, 2025

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space ?

case maps:get(template, Config, undefined) of
undefined ->
rebar_api:info("Using default template to generate the Dockerfile", []),
filename:join([code:priv_dir(rebar3_docker), "templates", "Dockerfile"]);
Bin ->
rebar_api:info("Using custom template from docker config to generate the Dockerfile", []),
filename:join([rebar_state:dir(RState), Bin])
end.

escape_string(Str) when is_binary(Str) ->
iolist_to_binary(io_lib:format("\"~s\"",
Expand Down
1 change: 1 addition & 0 deletions src/rebar3_docker_util.erl
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@
{erlang_version, binary},
{builder_image, binary},
{appname, binary},
{template, binary},
{build_packages, [list, binary]},
{git_url_rewrites, [list, [tuple, [binary, binary]]]},
{runtime_packages, [list, binary]},
Expand Down