How to retrieve a file that has been added then removed in a Docker image?
Multi tool use
Assume you have a working directory like this:
$ tree .
.
├── Dockerfile
└── file.txt
And the Dockerfile contains:
FROM debian:9
WORKDIR /usr/src/foo
COPY file.txt .
RUN echo Some random command involving file.txt
&& rm -f file.txt
And you build and push the corresponding image to a given Docker registry:
$ docker build -t foo/bar .
$ docker login #…
$ docker push foo/bar
Is there a way (or several ways) to retrieve from the image, the contents of file.txt that was added then removed in an intermediate layer? Does the answer depend on the choice of the WORKDIR?
docker
asked 1 min ago
ErikMDErikMD
1012
add a comment |
Assume you have a working directory like this:
$ tree .
.
├── Dockerfile
└── file.txt
And the Dockerfile contains:
FROM debian:9
WORKDIR /usr/src/foo
COPY file.txt .
RUN echo Some random command involving file.txt
&& rm -f file.txt
And you build and push the corresponding image to a given Docker registry:
$ docker build -t foo/bar .
$ docker login #…
$ docker push foo/bar
Is there a way (or several ways) to retrieve from the image, the contents of file.txt that was added then removed in an intermediate layer? Does the answer depend on the choice of the WORKDIR?
docker
asked 1 min ago
ErikMDErikMD
1012
add a comment |
Assume you have a working directory like this:
$ tree .
.
├── Dockerfile
└── file.txt
And the Dockerfile contains:
FROM debian:9
WORKDIR /usr/src/foo
COPY file.txt .
RUN echo Some random command involving file.txt
&& rm -f file.txt
And you build and push the corresponding image to a given Docker registry:
$ docker build -t foo/bar .
$ docker login #…
$ docker push foo/bar
Is there a way (or several ways) to retrieve from the image, the contents of file.txt that was added then removed in an intermediate layer? Does the answer depend on the choice of the WORKDIR?
docker
asked 1 min ago
ErikMDErikMD
1012
Assume you have a working directory like this:
$ tree .
.
├── Dockerfile
└── file.txt
And the Dockerfile contains:
FROM debian:9
WORKDIR /usr/src/foo
COPY file.txt .
RUN echo Some random command involving file.txt
&& rm -f file.txt
And you build and push the corresponding image to a given Docker registry:
$ docker build -t foo/bar .
$ docker login #…
$ docker push foo/bar
Is there a way (or several ways) to retrieve from the image, the contents of file.txt that was added then removed in an intermediate layer? Does the answer depend on the choice of the WORKDIR?
docker
docker
asked 1 min ago
ErikMDErikMD
1012
asked 1 min ago
ErikMDErikMD
1012
asked 1 min ago
ErikMDErikMD
1012
asked 1 min ago
ErikMDErikMD
1012
asked 1 min ago
ErikMDErikMD
1012
1012
add a comment |
add a comment |
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