Windows - Docker CMD does not execute

Question

For the life of me, I cannot seem to get my provisioning script to execute when I run my container. Down the road, I will need to pass in arguments to the docker run command to replace 'hiiii' and '123' for multiple container deployments.

This is my docker file

FROM microsoft/aspnet:3.5-windowsservercore-10.0.14393.1198

SHELL [“powershell”, “-Command”, “$ErrorActionPreference = ‘Stop’; $ProgressPreference = ‘SilentlyContinue’;”]

COPY *.ps1 /Container/

COPY [“wwwroot”, “/inetpub/wwwroot”]
COPY [“Admin”, “/Program Files (x86)Admin”]
COPY [“Admin/web.config”, “/Program Files (x86)/Admin/web_default.config”]

#ENTRYPOINT [“powershell”]
CMD [“powershell.exe”, -NoProfile, -File, C:\Container\Start-Admin.Docker.Cmd.ps1 -Parm1 ‘Hiiii’ -parm2 ‘123’]

I have also tried the shell version of CMD as follows

CMD powershell -NoProfile -File C:\Container\Start-Admin.Docker.Cmd.ps1 -Parm1 ‘Hiiii’ -Parm2 ‘123’

This is the command I am using.

docker image build -t image:v1:v1 .
docker run --name container -p 8001:80 -d image:v1

After I create and run the container I see that the script did not run, or failed. However, I can exec into powershell on the container and run the script manually and it works fine and I see all the changes that I need.

docker exec --interactive --tty container powershell
C:\Container\Start-Admin.Docker.Cmd.ps1 -Parm1 ‘Hiiii’ -Parm2 ‘123’

I am just at a loss as to what I am missing regarding CMD.

Thanks!

Answer 1

You can give this a try. ARG passes the variable to shell accessible via PS $env: variable.

ARG parmOne=Hiiii
ARG parmTwo=123

# Run a native PowerShell session and pass the script as a command.
RUN ["powershell", "-NoProfile", "-Command", "C:\\Container\\Start-Admin.Docker.Cmd.ps1 -Parm1 $env:parmOne -parm2 $env:parmTwo"]

Answer 2

I was able to get it working the way I had hoped. Though I am still working out some details in the provisioning script, this is how I ended up getting the result I wanted from the docker side of things.

FROM microsoft/aspnet:3.5-windowsservercore-10.0.14393.1198

#The shell line needs to be removed and any RUN commands need to be immediately proceeded by 'powershell' eg RUN powershell ping google.com
#SHELL [“powershell”, “-Command”, “$ErrorActionPreference = ‘Stop’; $ProgressPreference = ‘SilentlyContinue’;”]

COPY *.ps1 /Container/

COPY [“wwwroot”, “/inetpub/wwwroot”]
COPY [“Admin”, “/Program Files (x86)Admin”]
COPY [“Admin/web.config”, “/Program Files (x86)/Admin/web_default.config”]

ENV myParm1 Hiiii
ENV myParm2 123
ENTRYPOINT ["powershell", "-NoProfile", "-Command", "C:\\Container\\Start-Admin.Docker.Cmd.ps1"]
CMD ["-parm1 $Env:myParm1 -parm2 $Env:myParm2"] 

The docker run command looks like this

docker run -d -p 8001:80 -e "myParm1=byeeeee" --name=container image:v1

I hope this helps someone else that is in my boat. Thanks for all the answers!