build-arg.earth

FROM alpine:3.13
WORKDIR /test

ARG global1=abc
ARG global2=def

all:
    BUILD +test1
    BUILD +test2
    BUILD +test3
    BUILD +test4
    BUILD +test5
    BUILD +test-global1
    BUILD +test-global2
    BUILD +test-global3

file-exists:
    ARG VAR1=nope.txt
    ARG VAR2=dummy
    RUN touch "$VAR2"
    RUN touch "existing-file.txt"
    RUN test -f "$VAR1"

test1:
    BUILD --build-arg=VAR1=existing-file.txt +file-exists
    BUILD --build-arg=VAR1=dummy +file-exists
    BUILD --build-arg=VAR1=dummy2 --build-arg=VAR2=dummy2 +file-exists
    RUN touch dummy
    BUILD --build-arg=VAR1=$(ls) +file-exists
    RUN rm dummy
    RUN touch existing-file.txt
    BUILD --build-arg=VAR1=$(ls) +file-exists

test2:
    ARG ALPINE=3.11
    FROM alpine:$ALPINE
    RUN echo $ALPINE
    RUN test "$ALPINE" == "3.11"

dummy:
    FROM alpine:3.13

test3:
    ARG VAR1="test"
    FROM +dummy
    RUN test "$VAR1" == "test"

test4:
    RUN touch dummy
    ARG VAR1=$(ls)
    RUN touch should-not-be-seen
    RUN test "$VAR1" == "dummy"

test5:
    RUN printf '"text with quotes"' >./content
    ARG VAR1=$(cat ./content)
    RUN test "$VAR1" == '"text with quotes"'

test-global1:
    RUN test "$global1" == "abc"
    RUN test "$global2" == "def"

test-global2:
    FROM alpine:latest
    RUN test "$global1" == "abc"
    RUN test "$global2" == "def"

test-global3:
    FROM +dummy
    RUN test "$global1" == "abc"
    RUN test "$global2" == "def"