Compat API: building a container with a custom Dockerfile started failing with #10550

[riyad]

Is this a BUG REPORT or FEATURE REQUEST? (leave only one on its own line)

/kind bug

Description

Trying to find regressions by exercising the APIv2 through docker-py's test suite (see #5386) I came across a regression.

Building a container with a custom Dockerfile started failing with #10550.

Steps to reproduce the issue:

cat > custom.dockerfile <<EOF
FROM busybox
EOF

2. tar cf test.tar custom.dockerfile

3. curl -sS --unix-socket /run/user/1000/podman/podman.sock -XPOST 'http://localhost/v1.40/build?dockerfile=custom.dockerfile' -H "Content-Type: application/tar" --data-binary '@test.tar'

Describe the results you received:

Run against commit 2970e35 the result is:

400 Bad Request
{"cause":"invalid character 'c' looking for beginning of value","message":"failed to parse query parameter 'dockerfile': \"custom.dockerfile\": invalid character 'c' looking for beginning of value","response":400}

Describe the results you expected:

Before #10550 (e.g. c75d62c) was merged the result was:

200 OK
{"stream":"STEP 1: FROM busybox\n"}
{"stream":"STEP 2: COMMIT\n"}
{"stream":"--\u003e d3cd072556c\n"}
{"stream":"d3cd072556c21c1f1940bd536675b97d7d419a2287d6bb3bd5044ea7466db788\n"}
{"stream":"Successfully built d3cd072556c2\n"}

[mheon]

Dupe of #10660?

[riyad]

Oh, indeed. 😅