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Adds Dockerfile #105

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Adds Dockerfile #105

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3ed6667
Adds Dockerfile
EnigmaCurry Jan 23, 2022
897e10d
Adds DOCKER_IMAGE variable to Makefile
EnigmaCurry Jan 24, 2022
55899f8
Fix Dockerfile FROM tag
EnigmaCurry Jan 24, 2022
f5d6407
Add TIMEZONE build arg in Dockerfile.
EnigmaCurry Jan 24, 2022
12a1e7e
Docker run help message should include TZ environment variable.
EnigmaCurry Jan 24, 2022
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2 changes: 2 additions & 0 deletions .dockerignore
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
tty-clock
tty-clock.dSYM/
13 changes: 13 additions & 0 deletions Dockerfile
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@@ -0,0 +1,13 @@
FROM docker.io/alpine:3.15
RUN apk add -U build-base ncurses-dev
WORKDIR /src
ADD . /src
RUN make

FROM docker.io/alpine:3.15
ARG TIMEZONE=UTC
COPY --from=0 /src/tty-clock /usr/bin/tty-clock
CMD ['/usr/bin/tty-clock']
RUN apk add -U ncurses-libs tzdata && \
cp -rf /usr/share/zoneinfo/${TIMEZONE} /etc/localtime

@anarcat anarcat Jan 24, 2022

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why isn't this just a TZ environment that can be passed by the docker run caller?

@EnigmaCurry EnigmaCurry Jan 24, 2022

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ah, that works too, you can set the default for the container with the build argument, as well as override it at runtime with the environment TZ. I could remove the default, but I think its nice to be able to set it and not have to specify it again.


7 changes: 7 additions & 0 deletions Makefile
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Expand Up @@ -8,6 +8,9 @@ BIN ?= tty-clock
PREFIX ?= /usr/local
INSTALLPATH ?= ${DESTDIR}${PREFIX}/bin
MANPATH ?= ${DESTDIR}${PREFIX}/share/man/man1
DOCKER ?= docker
DOCKER_IMAGE ?= localhost/tty-clock
DOCKER_TIMEZONE ?= UTC

ifeq ($(shell sh -c 'which ncurses6-config>/dev/null 2>/dev/null && echo y'), y)
CFLAGS += -Wall -g $$(ncurses6-config --cflags)
Expand Down Expand Up @@ -57,3 +60,7 @@ clean :
@rm -f ${BIN}
@echo "${BIN} cleaned"

docker :

${DOCKER} build --build-arg=TIMEZONE=${DOCKER_TIMEZONE} -t ${DOCKER_IMAGE} .
@echo "Run the container: ${DOCKER} run --rm -it -e TZ=${DOCKER_TIMEZONE} ${DOCKER_IMAGE} tty-clock --help"