Better Dockerfile.

- Just install from PyPI.
- Pin versions and hashes.
- Use hashin to generate requirements.txt.
- Add Pipfile scripts entry to update requirements.txt.

.dockerignore

 *
-!README.rst
-!LICENSE.txt
-!setup.*
-!check_s3_bucket/
+!requirements.txt

Dockerfile

 FROM python:3.7-alpine3.9
-COPY ./ /check_s3_bucket
-RUN pip install /check_s3_bucket
+COPY requirements.txt /
+RUN pip install --progress-bar=off --no-cache-dir -r requirements.txt
+ENTRYPOINT [ "/usr/local/bin/check_s3_bucket" ]

Pipfile

@@ -8,6 +8,9 @@ pre-commit = "*"
 bumpversion = "*"
 twine = "*"
 check-s3-bucket = {editable = true,path = "."}
+dbus-python = "*"
+keyring = "*"
+hashin = "*"
 
 [packages]
 
@@ -19,3 +22,4 @@ ci = "pre-commit run --all-files"
 build = "python setup.py bdist_wheel"
 clean = "git clean -fdX"
 upload = "twine upload -s dist/*"
+update-reqs = "hashin -u"

Pipfile.lock

 {
     "_meta": {
         "hash": {
-            "sha256": "c8050943acf0de26c9c1c487dccf2e76fc706112362f0c5dd55f508f414a0f69"
+            "sha256": "780779a0114819967d7e8da079ae35331cdac7c6457dbae8cb0e657a9cc5e3a0"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -17,6 +17,13 @@
     },
     "default": {},
     "develop": {
+        "asn1crypto": {
+            "hashes": [
+                "sha256:2f1adbb7546ed199e3c90ef23ec95c5cf3585bac7d11fb7eb562a3fe89c64e87",
+                "sha256:9d5c20441baf0cb60a4ac34cc447c6c189024b6b4c6cd7877034f4965c464e49"
+            ],
+            "version": "==0.24.0"
+        },
         "aspy.yaml": {
             "hashes": [
                 "sha256:463372c043f70160a9ec950c3f1e4c3a82db5fca01d334b6bc89c7164d744bdc",
@@ -33,10 +40,10 @@
         },
         "botocore": {
             "hashes": [
-                "sha256:50d171665ad3fc603cfc86221d98a575e07fffe3e0eadd78b341c5a7170dc563",
-                "sha256:73f176999b4b03ec194158ed3334bc4955c1c5e182cff231cc012ddfed6c96dc"
+                "sha256:13e75f594c77988efd13f0862f3c7397d587e74b623fe0825d48b0ec0dc96d6b",
+                "sha256:1fa1ad4be9e9fea77eed7d5021be4283e9bcfecc60d2de83f96552025c4725d1"
             ],
-            "version": "==1.12.170"
+            "version": "==1.12.172"
         },
         "bumpversion": {
             "hashes": [
@@ -53,6 +60,39 @@
             ],
             "version": "==2019.6.16"
         },
+        "cffi": {
+            "hashes": [
+                "sha256:041c81822e9f84b1d9c401182e174996f0bae9991f33725d059b771744290774",
+                "sha256:046ef9a22f5d3eed06334d01b1e836977eeef500d9b78e9ef693f9380ad0b83d",
+                "sha256:066bc4c7895c91812eff46f4b1c285220947d4aa46fa0a2651ff85f2afae9c90",
+                "sha256:066c7ff148ae33040c01058662d6752fd73fbc8e64787229ea8498c7d7f4041b",
+                "sha256:2444d0c61f03dcd26dbf7600cf64354376ee579acad77aef459e34efcb438c63",
+                "sha256:300832850b8f7967e278870c5d51e3819b9aad8f0a2c8dbe39ab11f119237f45",
+                "sha256:34c77afe85b6b9e967bd8154e3855e847b70ca42043db6ad17f26899a3df1b25",
+                "sha256:46de5fa00f7ac09f020729148ff632819649b3e05a007d286242c4882f7b1dc3",
+                "sha256:4aa8ee7ba27c472d429b980c51e714a24f47ca296d53f4d7868075b175866f4b",
+                "sha256:4d0004eb4351e35ed950c14c11e734182591465a33e960a4ab5e8d4f04d72647",
+                "sha256:4e3d3f31a1e202b0f5a35ba3bc4eb41e2fc2b11c1eff38b362de710bcffb5016",
+                "sha256:50bec6d35e6b1aaeb17f7c4e2b9374ebf95a8975d57863546fa83e8d31bdb8c4",
+                "sha256:55cad9a6df1e2a1d62063f79d0881a414a906a6962bc160ac968cc03ed3efcfb",
+                "sha256:5662ad4e4e84f1eaa8efce5da695c5d2e229c563f9d5ce5b0113f71321bcf753",
+                "sha256:59b4dc008f98fc6ee2bb4fd7fc786a8d70000d058c2bbe2698275bc53a8d3fa7",
+                "sha256:73e1ffefe05e4ccd7bcea61af76f36077b914f92b76f95ccf00b0c1b9186f3f9",
+                "sha256:a1f0fd46eba2d71ce1589f7e50a9e2ffaeb739fb2c11e8192aa2b45d5f6cc41f",
+                "sha256:a2e85dc204556657661051ff4bab75a84e968669765c8a2cd425918699c3d0e8",
+                "sha256:a5457d47dfff24882a21492e5815f891c0ca35fefae8aa742c6c263dac16ef1f",
+                "sha256:a8dccd61d52a8dae4a825cdbb7735da530179fea472903eb871a5513b5abbfdc",
+                "sha256:ae61af521ed676cf16ae94f30fe202781a38d7178b6b4ab622e4eec8cefaff42",
+                "sha256:b012a5edb48288f77a63dba0840c92d0504aa215612da4541b7b42d849bc83a3",
+                "sha256:d2c5cfa536227f57f97c92ac30c8109688ace8fa4ac086d19d0af47d134e2909",
+                "sha256:d42b5796e20aacc9d15e66befb7a345454eef794fdb0737d1af593447c6c8f45",
+                "sha256:dee54f5d30d775f525894d67b1495625dd9322945e7fee00731952e0368ff42d",
+                "sha256:e070535507bd6aa07124258171be2ee8dfc19119c28ca94c9dfb7efd23564512",
+                "sha256:e1ff2748c84d97b065cc95429814cdba39bcbd77c9c85c89344b317dc0d9cbff",
+                "sha256:ed851c75d1e0e043cbf5ca9a8e1b13c4c90f3fbd863dacb01c0808e2b5204201"
+            ],
+            "version": "==1.12.3"
+        },
         "cfgv": {
             "hashes": [
                 "sha256:32edbe09de6f4521224b87822103a8c16a614d31a894735f7a5b3bcf0eb3c37e",
@@ -71,6 +111,34 @@
             "editable": true,
             "path": "."
         },
+        "cryptography": {
+            "hashes": [
+                "sha256:24b61e5fcb506424d3ec4e18bca995833839bf13c59fc43e530e488f28d46b8c",
+                "sha256:25dd1581a183e9e7a806fe0543f485103232f940fcfc301db65e630512cce643",
+                "sha256:3452bba7c21c69f2df772762be0066c7ed5dc65df494a1d53a58b683a83e1216",
+                "sha256:41a0be220dd1ed9e998f5891948306eb8c812b512dc398e5a01846d855050799",
+                "sha256:5751d8a11b956fbfa314f6553d186b94aa70fdb03d8a4d4f1c82dcacf0cbe28a",
+                "sha256:5f61c7d749048fa6e3322258b4263463bfccefecb0dd731b6561cb617a1d9bb9",
+                "sha256:72e24c521fa2106f19623a3851e9f89ddfdeb9ac63871c7643790f872a305dfc",
+                "sha256:7b97ae6ef5cba2e3bb14256625423413d5ce8d1abb91d4f29b6d1a081da765f8",
+                "sha256:961e886d8a3590fd2c723cf07be14e2a91cf53c25f02435c04d39e90780e3b53",
+                "sha256:96d8473848e984184b6728e2c9d391482008646276c3ff084a1bd89e15ff53a1",
+                "sha256:ae536da50c7ad1e002c3eee101871d93abdc90d9c5f651818450a0d3af718609",
+                "sha256:b0db0cecf396033abb4a93c95d1602f268b3a68bb0a9cc06a7cff587bb9a7292",
+                "sha256:cfee9164954c186b191b91d4193989ca994703b2fff406f71cf454a2d3c7327e",
+                "sha256:e6347742ac8f35ded4a46ff835c60e68c22a536a8ae5c4422966d06946b6d4c6",
+                "sha256:f27d93f0139a3c056172ebb5d4f9056e770fdf0206c2f422ff2ebbad142e09ed",
+                "sha256:f57b76e46a58b63d1c6375017f4564a28f19a5ca912691fd2e4261b3414b618d"
+            ],
+            "version": "==2.7"
+        },
+        "dbus-python": {
+            "hashes": [
+                "sha256:abf12bbb765e300bf8e2a1b2f32f85949eab06998dbda127952c31cb63957b6f"
+            ],
+            "index": "pypi",
+            "version": "==1.2.8"
+        },
         "docutils": {
             "hashes": [
                 "sha256:02aec4bd92ab067f6ff27a38a38a41173bf01bed8f89157768c1573f53e474a6",
@@ -79,6 +147,21 @@
             ],
             "version": "==0.14"
         },
+        "entrypoints": {
+            "hashes": [
+                "sha256:589f874b313739ad35be6e0cd7efde2a4e9b6fea91edcc34e58ecbb8dbe56d19",
+                "sha256:c70dd71abe5a8c85e55e12c19bd91ccfeec11a6e99044204511f9ed547d48451"
+            ],
+            "version": "==0.3"
+        },
+        "hashin": {
+            "hashes": [
+                "sha256:dbace6900d8de44f3106a64496803e45843cf4974755613db811a487fadbf4c6",
+                "sha256:fe764df71cabbbddfa72aa4d6685581c932bb5cf9100ddee6b2b04f3446ae2f7"
+            ],
+            "index": "pypi",
+            "version": "==0.14.5"
+        },
         "identify": {
             "hashes": [
                 "sha256:0a11379b46d06529795442742a043dc2fa14cd8c995ae81d1febbc5f1c014c87",
@@ -100,6 +183,13 @@
             ],
             "version": "==0.18"
         },
+        "jeepney": {
+            "hashes": [
+                "sha256:6089412a5de162c04747f0220f6b2223b8ba660acd041e52a76426ca550e3c70",
+                "sha256:f6f8b1428403b4afad04b6b82f9ab9fc426c253d7504c9031c41712a2c01dc74"
+            ],
+            "version": "==0.4"
+        },
         "jmespath": {
             "hashes": [
                 "sha256:3720a4b1bd659dd2eecad0666459b9788813e032b83e7ba58578e48254e0a0e6",
@@ -107,12 +197,34 @@
             ],
             "version": "==0.9.4"
         },
+        "keyring": {
+            "hashes": [
+                "sha256:1b74595f7439e4581a11d4f9a12790ac34addce64ca389c86272ff465f5e0b90",
+                "sha256:afbfe7bc9bdba69d25c551b0c738adde533d87e0b51ad6bbe332cbea19ad8476"
+            ],
+            "index": "pypi",
+            "version": "==19.0.2"
+        },
         "nodeenv": {
             "hashes": [
                 "sha256:ad8259494cf1c9034539f6cced78a1da4840a4b157e23640bc4a0c0546b0cb7a"
             ],
             "version": "==1.3.3"
         },
+        "packaging": {
+            "hashes": [
+                "sha256:0c98a5d0be38ed775798ece1b9727178c4469d9c3b4ada66e8e6b7849f8732af",
+                "sha256:9e1cbf8c12b1f1ce0bb5344b8d7ecf66a6f8a6e91bcb0c84593ed6d3ab5c4ab3"
+            ],
+            "version": "==19.0"
+        },
+        "pip-api": {
+            "hashes": [
+                "sha256:742b3edb5b077853ffcfec8a849f6ff1a622c6ecf648adb5fa0e4594998fcd46",
+                "sha256:a685eb315b9f10f6df4ceb66f3710148c8ad7de2d4ff29ee98fed0e4d949ec81"
+            ],
+            "version": "==0.0.10"
+        },
         "pkginfo": {
             "hashes": [
                 "sha256:7424f2c8511c186cd5424bbf31045b77435b37a8d604990b79d4e70d741148bb",
@@ -128,6 +240,12 @@
             "index": "pypi",
             "version": "==1.17.0"
         },
+        "pycparser": {
+            "hashes": [
+                "sha256:a988718abfad80b6b157acce7bf130a30876d27603738ac39f140993246b25b3"
+            ],
+            "version": "==2.19"
+        },
         "pygments": {
             "hashes": [
                 "sha256:71e430bc85c88a430f000ac1d9b331d2407f681d6f6aec95e8bcfbc3df5b0127",
@@ -135,6 +253,13 @@
             ],
             "version": "==2.4.2"
         },
+        "pyparsing": {
+            "hashes": [
+                "sha256:1873c03321fc118f4e9746baf201ff990ceb915f433f23b395f5580d1840cb2a",
+                "sha256:9b6323ef4ab914af344ba97510e966d64ba91055d6b9afa6b30799340e89cc03"
+            ],
+            "version": "==2.4.0"
+        },
         "python-dateutil": {
             "hashes": [
                 "sha256:7e6584c74aeed623791615e26efd690f29817a27c73085b78e4bad02493df2fb",
@@ -143,6 +268,13 @@
             "markers": "python_version >= '2.7'",
             "version": "==2.8.0"
         },
+        "pytz": {
+            "hashes": [
+                "sha256:303879e36b721603cc54604edcac9d20401bdbe31e1e4fdee5b9f98d5d31dfda",
+                "sha256:d747dd3d23d77ef44c6a3526e274af6efeb0a6f1afd5a69ba4d5be4098c8e141"
+            ],
+            "version": "==2019.1"
+        },
         "pyyaml": {
             "hashes": [
                 "sha256:57acc1d8533cbe51f6662a55434f0dbecfa2b9eaf115bede8f6fd00115a0c0d3",
@@ -180,6 +312,14 @@
             ],
             "version": "==0.9.1"
         },
+        "secretstorage": {
+            "hashes": [
+                "sha256:20c797ae48a4419f66f8d28fc221623f11fc45b6828f96bdb1ad9990acb59f92",
+                "sha256:7a119fb52a88e398dbb22a4b3eb39b779bfbace7e4153b7bc6e5954d86282a8a"
+            ],
+            "markers": "sys_platform == 'linux'",
+            "version": "==3.1.1"
+        },
         "six": {
             "hashes": [
                 "sha256:3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c",
@@ -196,10 +336,10 @@
         },
         "tqdm": {
             "hashes": [
-                "sha256:0a860bf2683fdbb4812fe539a6c22ea3f1777843ea985cb8c3807db448a0f7ab",
-                "sha256:e288416eecd4df19d12407d0c913cbf77aa8009d7fddb18f632aded3bdbdda6b"
+                "sha256:14a285392c32b6f8222ecfbcd217838f88e11630affe9006cd0e94c7eff3cb61",
+                "sha256:25d4c0ea02a305a688e7e9c2cdc8f862f989ef2a4701ab28ee963295f5b109ab"
             ],
-            "version": "==4.32.1"
+            "version": "==4.32.2"
         },
         "twine": {
             "hashes": [

requirements.txt

+botocore==1.12.172
+check-s3-bucket==0.2.0
+docutils==0.14
+jmespath==0.9.4
+python-dateutil==2.8.0
+pytz==2019.1
+six==1.12.0
+urllib3==1.25.3