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Modify a Dockerfile

Posted on Edited on Disqus:

I need to rewrite a Dockerfile to create my own Dockerfile.
I pull a docker image base from dockerhub first.

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FROM balenalib/raspberry-pi-alpine:3.9

LABEL org.opencontainers.image.authors="Tobias Hargesheimer <docker@ison.ws>" \
	org.opencontainers.image.title="NGINX" \
	org.opencontainers.image.description="AlpineLinux with NGINX on arm arch" \
	org.opencontainers.image.licenses="Apache-2.0" \
	org.opencontainers.image.url="https://hub.docker.com/r/tobi312/rpi-nginx/" \
	org.opencontainers.image.source="https://github.com/Tob1asDocker/rpi-nginx"

ARG CROSS_BUILD_START=":"
ARG CROSS_BUILD_END=":"

RUN [ ${CROSS_BUILD_START} ]

ENV NGINX_VERSION 1.14

RUN apk --no-cache add nginx>${NGINX_VERSION} \
	&& mkdir -p /run/nginx \
	&& sed -i "s/ssl_session_cache shared:SSL:2m;/#ssl_session_cache shared:SSL:2m;/g" /etc/nginx/nginx.conf

# forward request and error logs to docker log collector
RUN ln -sf /dev/stdout /var/log/nginx/access.log \
	&& ln -sf /dev/stderr /var/log/nginx/error.log
	
# fix: *** stack smashing detected ***: nginx: worker process terminated / [alert] 9#9: worker process *process-id* exited on signal 6
#RUN sed -i "s/worker_processes auto;/worker_processes 1;/g" /etc/nginx/nginx.conf
	
EXPOSE 80 443

CMD ["nginx", "-g", "daemon off;"]

RUN [ ${CROSS_BUILD_END} ]

For this image, its base is balenalib/raspberry-pi-alpine:3.9. when I am going to build my own docker image, it has the newest version, but I still use the old one, because it will be more stable for me.

I add some new command unders this docker base Dockerfile

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FROM balenalib/raspberry-pi-alpine:3.9

LABEL org.opencontainers.image.authors="Tobias Hargesheimer <docker@ison.ws>" \
	org.opencontainers.image.title="NGINX" \
	org.opencontainers.image.description="AlpineLinux with NGINX on arm arch" \
	org.opencontainers.image.licenses="Apache-2.0" \
	org.opencontainers.image.url="https://hub.docker.com/r/tobi312/rpi-nginx/" \
	org.opencontainers.image.source="https://github.com/Tob1asDocker/rpi-nginx"

ARG CROSS_BUILD_START=":"
ARG CROSS_BUILD_END=":"

RUN [ ${CROSS_BUILD_START} ]

ENV NGINX_VERSION 1.14

RUN apk --no-cache add nginx>${NGINX_VERSION} \
	&& mkdir -p /run/nginx \
	&& sed -i "s/ssl_session_cache shared:SSL:2m;/#ssl_session_cache shared:SSL:2m;/g" /etc/nginx/nginx.conf

# forward request and error logs to docker log collector
RUN ln -sf /dev/stdout /var/log/nginx/access.log \
	&& ln -sf /dev/stderr /var/log/nginx/error.log
	
# fix: *** stack smashing detected ***: nginx: worker process terminated / [alert] 9#9: worker process *process-id* exited on signal 6
#RUN sed -i "s/worker_processes auto;/worker_processes 1;/g" /etc/nginx/nginx.conf
	
EXPOSE 80 443

CMD ["nginx", "-g", "daemon off;"]

RUN [ ${CROSS_BUILD_END} ]
RUN apk add --no-cache \
 fcgi=2.4.0-r8 \
    fcgiwrap=1.1.0-r3 \
    spawn-fcgi=1.6.4-r3 \
      ca-certificates=20190108-r0 \
      nghttp2-libs=1.35.1-r0 \
      libssh2=1.8.2-r0 \
      libcurl=7.64.0-r2 \
    curl=7.64.0-r2 \
      oniguruma=6.9.4-r0 \
    jq=1.6-r0

Notice: the packages need to be installed all have version numbers which will cause the error in the following.

After modify the Dockerfile, I am going to build my docker image.

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root@vmnet8cloud:~/git_repo/preplanet/docker/planet# docker build -t vmnet8/preplanet:rpi-1 .
Sending build context to Docker daemon  4.096kB
Step 1/12 : FROM balenalib/raspberry-pi-alpine:3.9
 ---> d6c5aebf964a
Step 2/12 : LABEL org.opencontainers.image.authors="Tobias Hargesheimer <docker@ison.ws>" 	org.opencontainers.image.title="NGINX" 	org.opencontainers.image.description="AlpineLinux with NGINX on arm arch" 	org.opencontainers.image.licenses="Apache-2.0" 	org.opencontainers.image.url="https://hub.docker.com/r/tobi312/rpi-nginx/" 	org.opencontainers.image.source="https://github.com/Tob1asDocker/rpi-nginx"
 ---> Using cache
 ---> 1a8a69474af2
Step 3/12 : ARG CROSS_BUILD_START=":"
 ---> Using cache
 ---> 2ea7d76cc571
Step 4/12 : ARG CROSS_BUILD_END=":"
 ---> Using cache
 ---> 9dac95067f17
Step 5/12 : RUN [ ${CROSS_BUILD_START} ]
 ---> Using cache
 ---> e1d8ae03657f
Step 6/12 : ENV NGINX_VERSION 1.14
 ---> Using cache
 ---> 684896377216
Step 7/12 : RUN apk --no-cache add nginx>${NGINX_VERSION} 	&& mkdir -p /run/nginx 	&& sed -i "s/ssl_session_cache shared:SSL:2m;/#ssl_session_cache shared:SSL:2m;/g" /etc/nginx/nginx.conf
 ---> Using cache
 ---> ef20e56136c1
Step 8/12 : RUN ln -sf /dev/stdout /var/log/nginx/access.log 	&& ln -sf /dev/stderr /var/log/nginx/error.log
 ---> Using cache
 ---> 8d95b6ad6846
Step 9/12 : EXPOSE 80 443
 ---> Using cache
 ---> a12bf17fcaea
Step 10/12 : CMD ["nginx", "-g", "daemon off;"]
 ---> Using cache
 ---> 1f6e9eb85851
Step 11/12 : RUN [ ${CROSS_BUILD_END} ]
 ---> Using cache
 ---> 969cc49b4faf
Step 12/12 : RUN apk add --no-cache       fcgi=2.4.0-r8     fcgiwrap=1.1.0-r3     spawn-fcgi=1.6.4-r3       ca-certificates=20190108-r0       nghttp2-libs=1.35.1-r0       libssh2=1.8.2-r0       libcurl=7.64.0-r2     curl=7.64.0-r2       oniguruma=6.9.4-r0     jq=1.6-r0
 ---> Running in 910227bcece4
fetch http://dl-cdn.alpinelinux.org/alpine/v3.9/main/armhf/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.9/community/armhf/APKINDEX.tar.gz
ERROR: unsatisfiable constraints:
  nghttp2-libs-1.35.1-r1:
    breaks: world[nghttp2-libs=1.35.1-r0]
    satisfies: libcurl-7.64.0-r3[so:libnghttp2.so.14]
  libssh2-1.9.0-r1:
    breaks: world[libssh2=1.8.2-r0]
    satisfies: libcurl-7.64.0-r3[so:libssh2.so.1]
  libcurl-7.64.0-r3:
    breaks: world[libcurl=7.64.0-r2]
    satisfies: curl-7.64.0-r3[so:libcurl.so.4]
  curl-7.64.0-r3:
    breaks: world[curl=7.64.0-r2]
The command '/bin/sh -c apk add --no-cache       fcgi=2.4.0-r8     fcgiwrap=1.1.0-r3     spawn-fcgi=1.6.4-r3       ca-certificates=20190108-r0       nghttp2-libs=1.35.1-r0       libssh2=1.8.2-r0       libcurl=7.64.0-r2     curl=7.64.0-r2       oniguruma=6.9.4-r0     jq=1.6-r0' returned a non-zero code: 4

It shows error.

I modified the Dockerfile again and move off all packages versions like following

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FROM balenalib/raspberry-pi-alpine:3.9

LABEL org.opencontainers.image.authors="Tobias Hargesheimer <docker@ison.ws>" \
	org.opencontainers.image.title="NGINX" \
	org.opencontainers.image.description="AlpineLinux with NGINX on arm arch" \
	org.opencontainers.image.licenses="Apache-2.0" \
	org.opencontainers.image.url="https://hub.docker.com/r/tobi312/rpi-nginx/" \
	org.opencontainers.image.source="https://github.com/Tob1asDocker/rpi-nginx"

ARG CROSS_BUILD_START=":"
ARG CROSS_BUILD_END=":"

RUN [ ${CROSS_BUILD_START} ]

ENV NGINX_VERSION 1.14

RUN apk --no-cache add nginx>${NGINX_VERSION} \
	&& mkdir -p /run/nginx \
	&& sed -i "s/ssl_session_cache shared:SSL:2m;/#ssl_session_cache shared:SSL:2m;/g" /etc/nginx/nginx.conf

# forward request and error logs to docker log collector
RUN ln -sf /dev/stdout /var/log/nginx/access.log \
	&& ln -sf /dev/stderr /var/log/nginx/error.log
	
# fix: *** stack smashing detected ***: nginx: worker process terminated / [alert] 9#9: worker process *process-id* exited on signal 6
#RUN sed -i "s/worker_processes auto;/worker_processes 1;/g" /etc/nginx/nginx.conf
	
EXPOSE 80 443

CMD ["nginx", "-g", "daemon off;"]

RUN [ ${CROSS_BUILD_END} ]
RUN apk add --no-cache \
      fcgi \
    fcgiwrap \
    spawn-fcgi \
      ca-certificates \
      nghttp2-libs \
      libssh2 \
      libcurl \
    curl \
      oniguruma \
    jq

then build docker image again

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root@vmnet8cloud:~/git_repo/preplanet/docker/planet# docker build -t vmnet8/preplanet:rpi-1 .
Sending build context to Docker daemon  6.144kB
Step 1/12 : FROM balenalib/raspberry-pi-alpine:3.9
 ---> d6c5aebf964a
Step 2/12 : LABEL org.opencontainers.image.authors="Tobias Hargesheimer <docker@ison.ws>" 	org.opencontainers.image.title="NGINX" 	org.opencontainers.image.description="AlpineLinux with NGINX on arm arch" 	org.opencontainers.image.licenses="Apache-2.0" 	org.opencontainers.image.url="https://hub.docker.com/r/tobi312/rpi-nginx/" 	org.opencontainers.image.source="https://github.com/Tob1asDocker/rpi-nginx"
 ---> Using cache
 ---> 1a8a69474af2
Step 3/12 : ARG CROSS_BUILD_START=":"
 ---> Using cache
 ---> 2ea7d76cc571
Step 4/12 : ARG CROSS_BUILD_END=":"
 ---> Using cache
 ---> 9dac95067f17
Step 5/12 : RUN [ ${CROSS_BUILD_START} ]
 ---> Using cache
 ---> e1d8ae03657f
Step 6/12 : ENV NGINX_VERSION 1.14
 ---> Using cache
 ---> 684896377216
Step 7/12 : RUN apk --no-cache add nginx>${NGINX_VERSION} 	&& mkdir -p /run/nginx 	&& sed -i "s/ssl_session_cache shared:SSL:2m;/#ssl_session_cache shared:SSL:2m;/g" /etc/nginx/nginx.conf
 ---> Using cache
 ---> ef20e56136c1
Step 8/12 : RUN ln -sf /dev/stdout /var/log/nginx/access.log 	&& ln -sf /dev/stderr /var/log/nginx/error.log
 ---> Using cache
 ---> 8d95b6ad6846
Step 9/12 : EXPOSE 80 443
 ---> Using cache
 ---> a12bf17fcaea
Step 10/12 : CMD ["nginx", "-g", "daemon off;"]
 ---> Using cache
 ---> 1f6e9eb85851
Step 11/12 : RUN [ ${CROSS_BUILD_END} ]
 ---> Using cache
 ---> 969cc49b4faf
Step 12/12 : RUN apk add --no-cache       fcgi     fcgiwrap     spawn-fcgi       ca-certificates       nghttp2-libs       libssh2       libcurl     curl       oniguruma     jq
 ---> Running in 95d22279f720
fetch http://dl-cdn.alpinelinux.org/alpine/v3.9/main/armhf/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.9/community/armhf/APKINDEX.tar.gz
(1/5) Installing fcgi (2.4.0-r8)
(2/5) Installing fcgiwrap (1.1.0-r3)
Executing fcgiwrap-1.1.0-r3.pre-install
(3/5) Installing oniguruma (6.9.4-r0)
(4/5) Installing jq (1.6-r0)
(5/5) Installing spawn-fcgi (1.6.4-r3)
Executing busybox-1.29.3-r10.trigger
OK: 52 MiB in 77 packages
Removing intermediate container 95d22279f720
 ---> 7ee7b73f89ee
Successfully built 7ee7b73f89ee
Successfully tagged vmnet8/preplanet:rpi-1

After building, test the running container

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run docer image vmnet8/preplanet:rpi-1
root@vmnet8cloud:~/git_repo/preplanet/docker/planet# docker run -d vmnet8/preplanet:rpi-1
b974aee9b9bb0d6242dcbab12e975585ff1e2d4b887860523b6d0b261863d562
root@vmnet8cloud:~/git_repo/preplanet/docker/planet# docker ps -a
CONTAINER ID        IMAGE                    COMMAND                  CREATED             STATUS                          PORTS                            NAMES
b974aee9b9bb        vmnet8/preplanet:rpi-1   "/usr/bin/entry.sh n…"   9 seconds ago       Up 7 seconds                    80/tcp, 443/tcp                  goofy_banach
270cf6e3e185        vmnet8/preplanet:rpi-1   "/usr/bin/entry.sh n…"   2 minutes ago       Exited (0) About a minute ago                                    cranky_wing
7259cecd0e74        969cc49b4faf             "/bin/sh -c 'apk add…"   11 hours ago        Exited (99) 11 hours ago                                         dreamy_brown
910227bcece4        969cc49b4faf             "/bin/sh -c 'apk add…"   11 hours ago        Exited (4) 11 hours ago                                          modest_wu
d4f32b1bc836        68513e2e4bce             "/bin/sh -c 'apk add…"   14 hours ago        Exited (6) 14 hours ago                                          frosty_herschel
baa0a10c37a7        324ab2e7954e             "/bin/sh -c 'bash ./…"   4 weeks ago         Exited (127) 4 weeks ago                                         cranky_herschel
b5ba36510956        vmnet8/preplanet:rpi     "/usr/bin/entry.sh n…"   4 weeks ago         Up 4 weeks                      443/tcp, 0.0.0.0:20006->80/tcp   heuristic_chaplygin

                                                                                                                            201,0-1       Bot

It shows it works.