何が起きたか
docker buildをしたときは、buildができるが、docker compose buildをすると pipの部分でエラーになる。
$ docker compose build --no-cache
[+] Building 9.8s (8/8) FINISHED
=> [internal] load build definition from Dockerfile 0.0s
=> => transferring dockerfile: 31B 0.0s
=> [internal] load .dockerignore 0.0s
=> => transferring context: 2B 0.0s
=> [internal] load metadata for docker.io/library/python:3.10.8 0.0s
=> [1/4] FROM docker.io/library/python:3.10.8 0.0s
=> [internal] load build context 0.0s
=> => transferring context: 6.93kB 0.0s
=> CACHED [2/4] WORKDIR /app 0.0s
=> [3/4] COPY . . 0.1s
=> ERROR [4/4] RUN pip install -r requirements.txt 9.6s
------
> [4/4] RUN pip install -r requirements.txt:
#0 1.903 WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f8267d5fee0>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /simple/requests/
#0 2.404 WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f8266ab0ca0>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /simple/requests/
#0 3.406 WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f8266ab1510>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /simple/requests/
#0 5.409 WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f8266ab2650>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /simple/requests/
#0 9.415 WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f8266ab3610>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution')': /simple/requests/
#0 9.430 ERROR: Could not find a version that satisfies the requirement requests (from versions: none)
#0 9.430 ERROR: No matching distribution found for requests
#0 9.465 WARNING: There was an error checking the latest version of pip.
------
failed to solve: executor failed running [/bin/sh -c pip install -r requirements.txt]: exit code: 1$ docker build .
Sending build context to Docker daemon 11.78kB
Step 1/5 : FROM python:3.10.8
---> f05c8762fe15
Step 2/5 : ENV PYTHONIOENCODING utf-8
---> Using cache
---> 063aad4327f6
Step 3/5 : WORKDIR /app
---> Using cache
---> 83adc70ffa60
Step 4/5 : COPY . .
---> 7d84ec20666e
Step 5/5 : RUN pip install -r requirements.txt
---> Running in c9fd4c613587
（省略）
[notice] A new release of pip available: 22.2.2 -> 22.3
[notice] To update, run: pip install --upgrade pip
Removing intermediate container c9fd4c613587
---> 7e3bded3d083
Successfully built 7e3bded3d08修正
compose.ymlを編集したら動いた。
元々
app:
build: ./app書き換え後
app:
build:
context: ./app
network: hostbuildの時に、networkつながってないんやろうなぁと思って適当に足したわけだが、こんな挙動でしたっけ？記憶がない。
動いたからいいんだけど、compose specは理解した方がいいのだろうか。
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