docker pullを何回も叩いていると、ローカルのイメージが<none>になってしまうことがあります。 $ docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE node latest 6d123ea65021 2 weeks ago 706.5 MB centos latest 2b8d6139a545 2 weeks ago 212.1 MB postgres latest dcce0da1c311 2 weeks ago 213.9 MB mysql latest 97454fa6c9d3 2 weeks ago 282.8 MB <none> <none> 9552b2f0723b 2 weeks ago 255.7 MB debian latest 1265e16d0c28 2 weeks ago 84.98 M
![Dockerで none なイメージを一括で削除するワンライナー - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/0c3bd099517868208069207597d32606489c4f34/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-412672c5f0600ab9a64263b751f1bc81.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTk3MiZoPTM3OCZ0eHQ9RG9ja2VyJUUzJTgxJUE3JTIwbm9uZSUyMCVFMyU4MSVBQSVFMyU4MiVBNCVFMyU4MyVBMSVFMyU4MyVCQyVFMyU4MiVCOCVFMyU4MiU5MiVFNCVCOCU4MCVFNiU4QiVBQyVFMyU4MSVBNyVFNSU4OSU4QSVFOSU5OSVBNCVFMyU4MSU5OSVFMyU4MiU4QiVFMyU4MyVBRiVFMyU4MyVCMyVFMyU4MyVBOSVFMyU4MiVBNCVFMyU4MyU4QSVFMyU4MyVCQyZ0eHQtYWxpZ249bGVmdCUyQ3RvcCZ0eHQtY29sb3I9JTIzMjEyMTIxJnR4dC1mb250PUhpcmFnaW5vJTIwU2FucyUyMFc2JnR4dC1zaXplPTU2JnM9NGY3MmFhZDQwZTBiMWQ0MmNmMWM4ODlhNGIxNWZjZWY%26mark-x%3D142%26mark-y%3D57%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZoPTc2Jnc9NzcwJnR4dD0lNDBEUU5FTyZ0eHQtY29sb3I9JTIzMjEyMTIxJnR4dC1mb250PUhpcmFnaW5vJTIwU2FucyUyMFc2JnR4dC1zaXplPTM2JnR4dC1hbGlnbj1sZWZ0JTJDdG9wJnM9YmM4ZmRlYjJkOGM0YWI3ZjBjYjBjODNiOGMxNTQ0ZjI%26blend-x%3D142%26blend-y%3D436%26blend-mode%3Dnormal%26txt64%3DaW4gTWVyY2FyaQ%26txt-width%3D770%26txt-clip%3Dend%252Cellipsis%26txt-color%3D%2523212121%26txt-font%3DHiragino%2520Sans%2520W6%26txt-size%3D36%26txt-x%3D156%26txt-y%3D536%26s%3D64da1610ca3a581a44df2ac21aa484a1)