## Construir una Imagen de Docker para FastAPI { #build-a-docker-image-for-fastapi }

¡Bien, construyamos algo ahora! 🚀

Te mostraré cómo construir una **imagen de Docker** para FastAPI **desde cero**, basada en la imagen **oficial de Python**.

Esto es lo que querrías hacer en **la mayoría de los casos**, por ejemplo:

* Usando **Kubernetes** o herramientas similares
* Al ejecutar en un **Raspberry Pi**

	if b == nil {
		// Special case, useful in debugging.
		return "<nil>"
	}
	return string(b.buf[b.off:])
}

// Peek returns the next n bytes without advancing the buffer.
// If Peek returns fewer than n bytes, it also returns [io.EOF].
// The slice is only valid until the next call to a read or write method.
// The slice aliases the buffer content at least until the next buffer modification,

          }

          if (lengthBits < 0) throw ProtocolException("length > Long.MAX_VALUE")

          lengthBits
        }
        else -> {
          // Length is 127 or fewer bytes.
          (length0 and 0b0111_1111).toLong()
        }
      }

    // Note that this may be be an encoded "end of data" header.
    return DerHeader(tagClass, tag, constructed, length)
  }

   *     the size of the iterable
   * @return the element at the specified position in {@code iterable} or {@code defaultValue} if
   *     {@code iterable} contains fewer than {@code position + 1} elements.
   * @throws IndexOutOfBoundsException if {@code position} is negative
   * @since 4.0
   */
  @ParametricNullness
  public static <T extends @Nullable Object> T get(

 * the columns. The reverse is also available, associating a column with a row key / value map. Note
 * that, in some implementations, data access by column key may have fewer supported operations or
 * worse performance than data access by row key.
 *
 * <p>The methods returning collections or maps always return views of the underlying table.

   *     the size of the iterable
   * @return the element at the specified position in {@code iterable} or {@code defaultValue} if
   *     {@code iterable} contains fewer than {@code position + 1} elements.
   * @throws IndexOutOfBoundsException if {@code position} is negative
   * @since 4.0
   */
  @ParametricNullness
  public static <T extends @Nullable Object> T get(

        }

        @Test
        @DisplayName("Textual constructor invalid format throws SmbException")
        void testTextualConstructorInvalid() {
            // Arrange
            String bad = "S-1"; // fewer than 3 tokens

            // Act + Assert
            SmbException ex = assertThrows(SmbException.class, () -> new SID(bad));
            assertTrue(ex.getMessage().contains("Bad textual SID format"));
        }

* **Fast to code**: Increase the speed to develop features by about 200% to 300%. *
* **Fewer bugs**: Reduce about 40% of human (developer) induced errors. *
* **Intuitive**: Great editor support. <abbr title="also known as auto-complete, autocompletion, IntelliSense">Completion</abbr> everywhere. Less time debugging.

        // with a len of 0 forever
        if (len <= 0) {
          fail("read called with a len of " + len);
        }
        // read fewer than the max number of chars to read
        // shouldn't be a problem unless the buffer is shrinking each call
        return in.read(cbuf, off, Math.max(len - 1024, 0));
      }
    };
  }

        // with a len of 0 forever
        if (len <= 0) {
          fail("read called with a len of " + len);
        }
        // read fewer than the max number of chars to read
        // shouldn't be a problem unless the buffer is shrinking each call
        return in.read(cbuf, off, Math.max(len - 1024, 0));
      }
    };
  }